552640437 has 12 divisors (see below), whose sum is σ = 845215020. Its totient is φ = 346754688.

The previous prime is 552640421. The next prime is 552640463. The reversal of 552640437 is 734046255.

552640437 is a `hidden beast` number, since 5 + 5 + 2 + 640 + 4 + 3 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 302968836 + 249671601 = 17406^2 + 15801^2 .

It is not a de Polignac number, because 552640437 - 2⁴ = 552640421 is a prime.

It is a super-2 number, since 2×552640437² = 610822905215101938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552640537) 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, 1805862 + ... + 1806167.

It is an arithmetic number, because the mean of its divisors is an integer number (70434585).

Almost surely, 2^552640437 is an apocalyptic number.

It is an amenable number.

552640437 is a deficient number, since it is larger than the sum of its proper divisors (292574583).

552640437 is a wasteful number, since it uses less digits than its factorization.

552640437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612052 (or 3612049 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 552640437 is about 23508.3057024533. The cubic root of 552640437 is about 820.6303090509.

The spelling of 552640437 in words is "five hundred fifty-two million, six hundred forty thousand, four hundred thirty-seven".