2555531 has 8 divisors (see below), whose sum is σ = 2847744. Its totient is φ = 2273320.

The previous prime is 2555521. The next prime is 2555543. The reversal of 2555531 is 1355552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555531 is a prime.

It is a super-2 number, since 2×2555531² = 13061477383922, which contains 22 as substring.

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 2555531.

It is not an unprimeable number, because it can be changed into a prime (2555521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955 + ... + 2988.

It is an arithmetic number, because the mean of its divisors is an integer number (355968).

2^2555531 is an apocalyptic number.

2555531 is a deficient number, since it is larger than the sum of its proper divisors (292213).

2555531 is a wasteful number, since it uses less digits than its factorization.

2555531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001.

The product of its digits is 3750, while the sum is 26.

The square root of 2555531 is about 1598.6028274715. The cubic root of 2555531 is about 136.7184264254.

The spelling of 2555531 in words is "two million, five hundred fifty-five thousand, five hundred thirty-one".