55573159 has 2 divisors, whose sum is σ = 55573160. Its totient is φ = 55573158.

The previous prime is 55573139. The next prime is 55573183. The reversal of 55573159 is 95137555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55573159 - 2⁵ = 55573127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55573139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27786579 + 27786580.

It is an arithmetic number, because the mean of its divisors is an integer number (27786580).

Almost surely, 2^55573159 is an apocalyptic number.

55573159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55573159 is an equidigital number, since it uses as much as digits as its factorization.

55573159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118125, while the sum is 40.

The square root of 55573159 is about 7454.7407064230. The cubic root of 55573159 is about 381.6117117556.

The spelling of 55573159 in words is "fifty-five million, five hundred seventy-three thousand, one hundred fifty-nine".