55867157 has 4 divisors (see below), whose sum is σ = 55960716. Its totient is φ = 55773600.

The previous prime is 55867127. The next prime is 55867171. The reversal of 55867157 is 75176855.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31798321 + 24068836 = 5639^2 + 4906^2 .

It is a cyclic number.

It is not a de Polignac number, because 55867157 - 2⁸ = 55866901 is a prime.

It is a super-2 number, since 2×55867157² = 6242278462525298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55867127) 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, 45878 + ... + 47079.

It is an arithmetic number, because the mean of its divisors is an integer number (13990179).

Almost surely, 2^55867157 is an apocalyptic number.

It is an amenable number.

55867157 is a deficient number, since it is larger than the sum of its proper divisors (93559).

55867157 is an equidigital number, since it uses as much as digits as its factorization.

55867157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93558.

The product of its digits is 294000, while the sum is 44.

The square root of 55867157 is about 7474.4335571333. The cubic root of 55867157 is about 382.2834737892.

The spelling of 55867157 in words is "fifty-five million, eight hundred sixty-seven thousand, one hundred fifty-seven".