55931497 has 16 divisors (see below), whose sum is σ = 60192000. Its totient is φ = 51819264.

The previous prime is 55931467. The next prime is 55931501. The reversal of 55931497 is 79413955.

It is a cyclic number.

It is not a de Polignac number, because 55931497 - 2¹¹ = 55929449 is a prime.

It is a super-2 number, since 2×55931497² = 6256664713322018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55931437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233904 + ... + 234142.

It is an arithmetic number, because the mean of its divisors is an integer number (3762000).

Almost surely, 2^55931497 is an apocalyptic number.

It is an amenable number.

55931497 is a deficient number, since it is larger than the sum of its proper divisors (4260503).

55931497 is a wasteful number, since it uses less digits than its factorization.

55931497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its digits is 170100, while the sum is 43.

The square root of 55931497 is about 7478.7363237381. The cubic root of 55931497 is about 382.4301710853.

The spelling of 55931497 in words is "fifty-five million, nine hundred thirty-one thousand, four hundred ninety-seven".