55551929 has 2 divisors, whose sum is σ = 55551930. Its totient is φ = 55551928.

The previous prime is 55551913. The next prime is 55551941. The reversal of 55551929 is 92915555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 123904 = 7445^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 55551929 - 2⁴ = 55551913 is a prime.

It is not a weakly prime, because it can be changed into another prime (55551989) 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, 27775964 + 27775965.

It is an arithmetic number, because the mean of its divisors is an integer number (27775965).

Almost surely, 2^55551929 is an apocalyptic number.

It is an amenable number.

55551929 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551929 is an equidigital number, since it uses as much as digits as its factorization.

55551929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 101250, while the sum is 41.

The square root of 55551929 is about 7453.3166442866. The cubic root of 55551929 is about 381.5631112642.

The spelling of 55551929 in words is "fifty-five million, five hundred fifty-one thousand, nine hundred twenty-nine".