55725697 has 4 divisors (see below), whose sum is σ = 56151216. Its totient is φ = 55300180.

The previous prime is 55725679. The next prime is 55725701. The reversal of 55725697 is 79652755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55725697 - 2¹¹ = 55723649 is a prime.

It is a super-2 number, since 2×55725697² = 6210706612271618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55725667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212563 + ... + 212824.

It is an arithmetic number, because the mean of its divisors is an integer number (14037804).

Almost surely, 2^55725697 is an apocalyptic number.

It is an amenable number.

55725697 is a deficient number, since it is larger than the sum of its proper divisors (425519).

55725697 is a wasteful number, since it uses less digits than its factorization.

55725697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425518.

The product of its digits is 661500, while the sum is 46.

The square root of 55725697 is about 7464.9646348794. The cubic root of 55725697 is about 381.9605438813.

The spelling of 55725697 in words is "fifty-five million, seven hundred twenty-five thousand, six hundred ninety-seven".