3551572 has 24 divisors (see below), whose sum is σ = 6811560. Its totient is φ = 1612800.

The previous prime is 3551563. The next prime is 3551573. The reversal of 3551572 is 2751553.

It can be written as a sum of positive squares in 4 ways, for example, as 404496 + 3147076 = 636^2 + 1774^2 .

It is a super-2 number, since 2×3551572² = 25227327342368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551573) 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, 1072 + ... + 2872.

It is an arithmetic number, because the mean of its divisors is an integer number (283815).

Almost surely, 2^3551572 is an apocalyptic number.

It is an amenable number.

3551572 is a deficient number, since it is larger than the sum of its proper divisors (3259988).

3551572 is a wasteful number, since it uses less digits than its factorization.

3551572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its digits is 5250, while the sum is 28.

The square root of 3551572 is about 1884.5614874554. The cubic root of 3551572 is about 152.5715439635.

The spelling of 3551572 in words is "three million, five hundred fifty-one thousand, five hundred seventy-two".