55151617 has 4 divisors (see below), whose sum is σ = 55296000. Its totient is φ = 55007236.

The previous prime is 55151599. The next prime is 55151627. The reversal of 55151617 is 71615155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55151617 - 2¹⁵ = 55118849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55151627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71617 + ... + 72382.

It is an arithmetic number, because the mean of its divisors is an integer number (13824000).

Almost surely, 2^55151617 is an apocalyptic number.

It is an amenable number.

55151617 is a deficient number, since it is larger than the sum of its proper divisors (144383).

55151617 is a wasteful number, since it uses less digits than its factorization.

55151617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144382.

The product of its digits is 5250, while the sum is 31.

The square root of 55151617 is about 7426.4134681554. The cubic root of 55151617 is about 380.6443753051.

The spelling of 55151617 in words is "fifty-five million, one hundred fifty-one thousand, six hundred seventeen".