55695931 has 2 divisors, whose sum is σ = 55695932. Its totient is φ = 55695930.

The previous prime is 55695923. The next prime is 55695947. The reversal of 55695931 is 13959655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55695931 - 2³ = 55695923 is a prime.

It is a super-4 number, since 4×55695931⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (55695971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27847965 + 27847966.

It is an arithmetic number, because the mean of its divisors is an integer number (27847966).

Almost surely, 2^55695931 is an apocalyptic number.

55695931 is a deficient number, since it is larger than the sum of its proper divisors (1).

55695931 is an equidigital number, since it uses as much as digits as its factorization.

55695931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182250, while the sum is 43.

The square root of 55695931 is about 7462.9706551748. The cubic root of 55695931 is about 381.8925234221.

The spelling of 55695931 in words is "fifty-five million, six hundred ninety-five thousand, nine hundred thirty-one".