52278930 has 48 divisors (see below), whose sum is σ = 148284864. Its totient is φ = 12673440.

The previous prime is 52278911. The next prime is 52278949. The reversal of 52278930 is 3987225.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52278911) and next prime (52278949).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25414 + ... + 27393.

It is an arithmetic number, because the mean of its divisors is an integer number (3089268).

Almost surely, 2^52278930 is an apocalyptic number.

52278930 is an abundant number, since it is smaller than the sum of its proper divisors (96005934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52278930 is a wasteful number, since it uses less digits than its factorization.

52278930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52831 (or 52828 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 52278930 is about 7230.4170004226. The cubic root of 52278930 is about 373.9173037251.

The spelling of 52278930 in words is "fifty-two million, two hundred seventy-eight thousand, nine hundred thirty".