55837157 has 4 divisors (see below), whose sum is σ = 55883820. Its totient is φ = 55790496.

The previous prime is 55837153. The next prime is 55837183. The reversal of 55837157 is 75173855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75173855 = 5 ⋅15034771.

It can be written as a sum of positive squares in 2 ways, for example, as 55338721 + 498436 = 7439^2 + 706^2 .

It is a cyclic number.

It is not a de Polignac number, because 55837157 - 2² = 55837153 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 (55837153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21488 + ... + 23945.

It is an arithmetic number, because the mean of its divisors is an integer number (13970955).

Almost surely, 2^55837157 is an apocalyptic number.

It is an amenable number.

55837157 is a deficient number, since it is larger than the sum of its proper divisors (46663).

55837157 is a wasteful number, since it uses less digits than its factorization.

55837157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46662.

The product of its digits is 147000, while the sum is 41.

The square root of 55837157 is about 7472.4264466102. The cubic root of 55837157 is about 382.2150343085.

The spelling of 55837157 in words is "fifty-five million, eight hundred thirty-seven thousand, one hundred fifty-seven".