56405198 has 4 divisors (see below), whose sum is σ = 84607800. Its totient is φ = 28202598.

The previous prime is 56405191. The next prime is 56405231. The reversal of 56405198 is 89150465.

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

It is a super-2 number, since 2×56405198² = 6363092722838408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56405191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14101298 + ... + 14101301.

It is an arithmetic number, because the mean of its divisors is an integer number (21151950).

Almost surely, 2^56405198 is an apocalyptic number.

56405198 is a deficient number, since it is larger than the sum of its proper divisors (28202602).

56405198 is a wasteful number, since it uses less digits than its factorization.

56405198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28202601.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 56405198 is about 7510.3394064450. The cubic root of 56405198 is about 383.5067768782.

The spelling of 56405198 in words is "fifty-six million, four hundred five thousand, one hundred ninety-eight".