3125551 has 12 divisors (see below), whose sum is σ = 3701656. Its totient is φ = 2621520.

The previous prime is 3125537. The next prime is 3125561. The reversal of 3125551 is 1555213.

It is not a de Polignac number, because 3125551 - 2¹⁵ = 3092783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 580 + ... + 2566.

Almost surely, 2^3125551 is an apocalyptic number.

3125551 is a deficient number, since it is larger than the sum of its proper divisors (576105).

3125551 is a wasteful number, since it uses less digits than its factorization.

3125551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2011 counting only the distinct ones).

The product of its digits is 750, while the sum is 22.

The square root of 3125551 is about 1767.9227924318. The cubic root of 3125551 is about 146.2094791191.

It can be divided in two parts, 31255 and 51, that multiplied together give a triangular number (1594005 = T₁₇₈₅).

The spelling of 3125551 in words is "three million, one hundred twenty-five thousand, five hundred fifty-one".