76422557 has 2 divisors, whose sum is σ = 76422558. Its totient is φ = 76422556.

The previous prime is 76422529. The next prime is 76422581. The reversal of 76422557 is 75522467.

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., 75672601 + 749956 = 8699^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 76422557 - 2¹⁴ = 76406173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76422557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76422587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38211278 + 38211279.

It is an arithmetic number, because the mean of its divisors is an integer number (38211279).

Almost surely, 2^76422557 is an apocalyptic number.

It is an amenable number.

76422557 is a deficient number, since it is larger than the sum of its proper divisors (1).

76422557 is an equidigital number, since it uses as much as digits as its factorization.

76422557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 38.

The square root of 76422557 is about 8741.9995996339. Note that the first 3 decimals coincide. The cubic root of 76422557 is about 424.3659417149.

The spelling of 76422557 in words is "seventy-six million, four hundred twenty-two thousand, five hundred fifty-seven".