55158398 has 8 divisors (see below), whose sum is σ = 83030808. Its totient is φ = 27481464.

The previous prime is 55158359. The next prime is 55158413. The reversal of 55158398 is 89385155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48161 + ... + 49292.

It is an arithmetic number, because the mean of its divisors is an integer number (10378851).

Almost surely, 2^55158398 is an apocalyptic number.

55158398 is a deficient number, since it is larger than the sum of its proper divisors (27872410).

55158398 is a wasteful number, since it uses less digits than its factorization.

55158398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97738.

The product of its digits is 216000, while the sum is 44.

The square root of 55158398 is about 7426.8700002087. The cubic root of 55158398 is about 380.6599749912.

The spelling of 55158398 in words is "fifty-five million, one hundred fifty-eight thousand, three hundred ninety-eight".