55158658 has 4 divisors (see below), whose sum is σ = 82737990. Its totient is φ = 27579328.

The previous prime is 55158643. The next prime is 55158661. The reversal of 55158658 is 85685155.

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

It can be written as a sum of positive squares in only one way, i.e., 44049769 + 11108889 = 6637^2 + 3333^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13789663 + ... + 13789666.

Almost surely, 2^55158658 is an apocalyptic number.

55158658 is a deficient number, since it is larger than the sum of its proper divisors (27579332).

55158658 is a wasteful number, since it uses less digits than its factorization.

55158658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27579331.

The product of its digits is 240000, while the sum is 43.

The square root of 55158658 is about 7426.8875041972. The cubic root of 55158658 is about 380.6605730955.

The spelling of 55158658 in words is "fifty-five million, one hundred fifty-eight thousand, six hundred fifty-eight".