52658978 has 4 divisors (see below), whose sum is σ = 78988470. Its totient is φ = 26329488.

The previous prime is 52658959. The next prime is 52658981. The reversal of 52658978 is 87985625.

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., 51652969 + 1006009 = 7187^2 + 1003^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13164743 + ... + 13164746.

Almost surely, 2^52658978 is an apocalyptic number.

52658978 is a deficient number, since it is larger than the sum of its proper divisors (26329492).

52658978 is a wasteful number, since it uses less digits than its factorization.

52658978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26329491.

The product of its digits is 1209600, while the sum is 50.

The square root of 52658978 is about 7256.6506047901. The cubic root of 52658978 is about 374.8211959430.

The spelling of 52658978 in words is "fifty-two million, six hundred fifty-eight thousand, nine hundred seventy-eight".