55351157 has 4 divisors (see below), whose sum is σ = 55483680. Its totient is φ = 55218636.

The previous prime is 55351139. The next prime is 55351159. The reversal of 55351157 is 75115355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55351157 - 2⁸ = 55350901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55351159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65633 + ... + 66470.

It is an arithmetic number, because the mean of its divisors is an integer number (13870920).

Almost surely, 2^55351157 is an apocalyptic number.

It is an amenable number.

55351157 is a deficient number, since it is larger than the sum of its proper divisors (132523).

55351157 is a wasteful number, since it uses less digits than its factorization.

55351157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132522.

The product of its digits is 13125, while the sum is 32.

The square root of 55351157 is about 7439.8358180809. The cubic root of 55351157 is about 381.1028832361.

The spelling of 55351157 in words is "fifty-five million, three hundred fifty-one thousand, one hundred fifty-seven".