52961978 has 4 divisors (see below), whose sum is σ = 79442970. Its totient is φ = 26480988.

The previous prime is 52961957. The next prime is 52961989. The reversal of 52961978 is 87916925.

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., 44182609 + 8779369 = 6647^2 + 2963^2 .

It is a super-2 number, since 2×52961978² = 5609942227344968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13240493 + ... + 13240496.

Almost surely, 2^52961978 is an apocalyptic number.

52961978 is a deficient number, since it is larger than the sum of its proper divisors (26480992).

52961978 is a wasteful number, since it uses less digits than its factorization.

52961978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26480991.

The product of its digits is 272160, while the sum is 47.

The square root of 52961978 is about 7277.4980590860. The cubic root of 52961978 is about 375.5387290927.

The spelling of 52961978 in words is "fifty-two million, nine hundred sixty-one thousand, nine hundred seventy-eight".