55531051 has 2 divisors, whose sum is σ = 55531052. Its totient is φ = 55531050.

The previous prime is 55531037. The next prime is 55531087. The reversal of 55531051 is 15013555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55531051 - 2¹⁵ = 55498283 is a prime.

It is not a weakly prime, because it can be changed into another prime (55531001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765525 + 27765526.

It is an arithmetic number, because the mean of its divisors is an integer number (27765526).

Almost surely, 2^55531051 is an apocalyptic number.

55531051 is a deficient number, since it is larger than the sum of its proper divisors (1).

55531051 is an equidigital number, since it uses as much as digits as its factorization.

55531051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 55531051 is about 7451.9159281355. The cubic root of 55531051 is about 381.5153045065.

The spelling of 55531051 in words is "fifty-five million, five hundred thirty-one thousand, fifty-one".