76521937 has 2 divisors, whose sum is σ = 76521938. Its totient is φ = 76521936.

The previous prime is 76521901. The next prime is 76521941. The reversal of 76521937 is 73912567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74494161 + 2027776 = 8631^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 76521937 - 2¹⁵ = 76489169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76521937.

It is not a weakly prime, because it can be changed into another prime (76521967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38260968 + 38260969.

It is an arithmetic number, because the mean of its divisors is an integer number (38260969).

Almost surely, 2^76521937 is an apocalyptic number.

It is an amenable number.

76521937 is a deficient number, since it is larger than the sum of its proper divisors (1).

76521937 is an equidigital number, since it uses as much as digits as its factorization.

76521937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 76521937 is about 8747.6818071990. The cubic root of 76521937 is about 424.5498107248.

The spelling of 76521937 in words is "seventy-six million, five hundred twenty-one thousand, nine hundred thirty-seven".