76525978 has 4 divisors (see below), whose sum is σ = 114788970. Its totient is φ = 38262988.

The previous prime is 76525963. The next prime is 76525987. The reversal of 76525978 is 87952567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87952567 = 7211 ⋅12197.

It can be written as a sum of positive squares in only one way, i.e., 59028489 + 17497489 = 7683^2 + 4183^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19131493 + ... + 19131496.

Almost surely, 2^76525978 is an apocalyptic number.

76525978 is a deficient number, since it is larger than the sum of its proper divisors (38262992).

76525978 is a wasteful number, since it uses less digits than its factorization.

76525978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38262991.

The product of its digits is 1058400, while the sum is 49.

The square root of 76525978 is about 8747.9127796292. The cubic root of 76525978 is about 424.5572838567.

The spelling of 76525978 in words is "seventy-six million, five hundred twenty-five thousand, nine hundred seventy-eight".