55627697 has 4 divisors (see below), whose sum is σ = 55760880. Its totient is φ = 55494516.

The previous prime is 55627643. The next prime is 55627699. The reversal of 55627697 is 79672655.

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 55627697 - 2⁶ = 55627633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55627699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65963 + ... + 66800.

It is an arithmetic number, because the mean of its divisors is an integer number (13940220).

Almost surely, 2^55627697 is an apocalyptic number.

It is an amenable number.

55627697 is a deficient number, since it is larger than the sum of its proper divisors (133183).

55627697 is a wasteful number, since it uses less digits than its factorization.

55627697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133182.

The product of its digits is 793800, while the sum is 47.

The square root of 55627697 is about 7458.3977501874. The cubic root of 55627697 is about 381.7365054234.

The spelling of 55627697 in words is "fifty-five million, six hundred twenty-seven thousand, six hundred ninety-seven".