53022478 has 4 divisors (see below), whose sum is σ = 79533720. Its totient is φ = 26511238.

The previous prime is 53022467. The next prime is 53022491. The reversal of 53022478 is 87422035.

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

It is a super-2 number, since 2×53022478² = 5622766346520968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13255618 + ... + 13255621.

It is an arithmetic number, because the mean of its divisors is an integer number (19883430).

Almost surely, 2^53022478 is an apocalyptic number.

53022478 is a deficient number, since it is larger than the sum of its proper divisors (26511242).

53022478 is a wasteful number, since it uses less digits than its factorization.

53022478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26511241.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 53022478 is about 7281.6535210074. The cubic root of 53022478 is about 375.6816709300.

The spelling of 53022478 in words is "fifty-three million, twenty-two thousand, four hundred seventy-eight".