1552551 has 48 divisors (see below), whose sum is σ = 2860032. Its totient is φ = 728640.

The previous prime is 1552543. The next prime is 1552553.

1552551 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1552551 - 2³ = 1552543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33010 + ... + 33056.

It is an arithmetic number, because the mean of its divisors is an integer number (59584).

2^1552551 is an apocalyptic number.

1552551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1552551 is a deficient number, since it is larger than the sum of its proper divisors (1307481).

1552551 is a wasteful number, since it uses less digits than its factorization.

1552551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 81 counting only the distinct ones).

The product of its digits is 1250, while the sum is 24.

The square root of 1552551 is about 1246.0140448647. The cubic root of 1552551 is about 115.7929073543.

It can be divided in two parts, 15525 and 51, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 1552551 in words is "one million, five hundred fifty-two thousand, five hundred fifty-one".