55913157 has 12 divisors (see below), whose sum is σ = 80902380. Its totient is φ = 37211328.

The previous prime is 55913113. The next prime is 55913197. The reversal of 55913157 is 75131955.

55913157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6548481 + 49364676 = 2559^2 + 7026^2 .

It is not a de Polignac number, because 55913157 - 2¹⁶ = 55847621 is a prime.

It is a super-2 number, since 2×55913157² = 6252562251413298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55913107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519 + ... + 10587.

It is an arithmetic number, because the mean of its divisors is an integer number (6741865).

Almost surely, 2^55913157 is an apocalyptic number.

It is an amenable number.

55913157 is a deficient number, since it is larger than the sum of its proper divisors (24989223).

55913157 is a wasteful number, since it uses less digits than its factorization.

55913157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692 (or 10689 counting only the distinct ones).

The product of its digits is 23625, while the sum is 36.

The square root of 55913157 is about 7477.5100802339. The cubic root of 55913157 is about 382.3883667564.

The spelling of 55913157 in words is "fifty-five million, nine hundred thirteen thousand, one hundred fifty-seven".