97280551 has 4 divisors (see below), whose sum is σ = 102400600. Its totient is φ = 92160504.

The previous prime is 97280509. The next prime is 97280563. The reversal of 97280551 is 15508279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15508279 = 23 ⋅674273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97280551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97280551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97280581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559996 + ... + 2560033.

It is an arithmetic number, because the mean of its divisors is an integer number (25600150).

Almost surely, 2^97280551 is an apocalyptic number.

97280551 is a deficient number, since it is larger than the sum of its proper divisors (5120049).

97280551 is a wasteful number, since it uses less digits than its factorization.

97280551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120048.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 97280551 is about 9863.0903372118. The cubic root of 97280551 is about 459.9126346369.

The spelling of 97280551 in words is "ninety-seven million, two hundred eighty thousand, five hundred fifty-one".