55726531 has 8 divisors (see below), whose sum is σ = 64153440. Its totient is φ = 47416128.

The previous prime is 55726529. The next prime is 55726553. The reversal of 55726531 is 13562755.

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

It is a cyclic number.

It is not a de Polignac number, because 55726531 - 2¹ = 55726529 is a prime.

It is a super-2 number, since 2×55726531² = 6210892514587922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55726511) 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, 28096 + ... + 30013.

It is an arithmetic number, because the mean of its divisors is an integer number (8019180).

Almost surely, 2^55726531 is an apocalyptic number.

55726531 is a deficient number, since it is larger than the sum of its proper divisors (8426909).

55726531 is a wasteful number, since it uses less digits than its factorization.

55726531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58253.

The product of its digits is 31500, while the sum is 34.

The square root of 55726531 is about 7465.0204956182. The cubic root of 55726531 is about 381.9624493666.

The spelling of 55726531 in words is "fifty-five million, seven hundred twenty-six thousand, five hundred thirty-one".