53120978 has 4 divisors (see below), whose sum is σ = 79681470. Its totient is φ = 26560488.

The previous prime is 53120959. The next prime is 53120981. The reversal of 53120978 is 87902135.

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., 34656769 + 18464209 = 5887^2 + 4297^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13280243 + ... + 13280246.

Almost surely, 2^53120978 is an apocalyptic number.

53120978 is a deficient number, since it is larger than the sum of its proper divisors (26560492).

53120978 is a wasteful number, since it uses less digits than its factorization.

53120978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26560491.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 53120978 is about 7288.4139564105. The cubic root of 53120978 is about 375.9141619731.

The spelling of 53120978 in words is "fifty-three million, one hundred twenty thousand, nine hundred seventy-eight".