55672691 has 2 divisors, whose sum is σ = 55672692. Its totient is φ = 55672690.

The previous prime is 55672681. The next prime is 55672699. The reversal of 55672691 is 19627655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55672691 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55672699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27836345 + 27836346.

It is an arithmetic number, because the mean of its divisors is an integer number (27836346).

Almost surely, 2^55672691 is an apocalyptic number.

55672691 is a deficient number, since it is larger than the sum of its proper divisors (1).

55672691 is an equidigital number, since it uses as much as digits as its factorization.

55672691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 55672691 is about 7461.4134719904. The cubic root of 55672691 is about 381.8393991525.

The spelling of 55672691 in words is "fifty-five million, six hundred seventy-two thousand, six hundred ninety-one".