76551457 has 2 divisors, whose sum is σ = 76551458. Its totient is φ = 76551456.

The previous prime is 76551421. The next prime is 76551467. The reversal of 76551457 is 75415567.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76055841 + 495616 = 8721^2 + 704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76551457 is a prime.

It is not a weakly prime, because it can be changed into another prime (76551407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38275728 + 38275729.

It is an arithmetic number, because the mean of its divisors is an integer number (38275729).

Almost surely, 2^76551457 is an apocalyptic number.

It is an amenable number.

76551457 is a deficient number, since it is larger than the sum of its proper divisors (1).

76551457 is an equidigital number, since it uses as much as digits as its factorization.

76551457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 40.

The square root of 76551457 is about 8749.3689486728. The cubic root of 76551457 is about 424.6043968111.

The spelling of 76551457 in words is "seventy-six million, five hundred fifty-one thousand, four hundred fifty-seven".