787457057 has 2 divisors, whose sum is σ = 787457058. Its totient is φ = 787457056.

The previous prime is 787457053. The next prime is 787457087. The reversal of 787457057 is 750754787.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782656576 + 4800481 = 27976^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 787457057 - 2² = 787457053 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 787456996 and 787457014.

It is not a weakly prime, because it can be changed into another prime (787457053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393728528 + 393728529.

It is an arithmetic number, because the mean of its divisors is an integer number (393728529).

Almost surely, 2^787457057 is an apocalyptic number.

It is an amenable number.

787457057 is a deficient number, since it is larger than the sum of its proper divisors (1).

787457057 is an equidigital number, since it uses as much as digits as its factorization.

787457057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920800, while the sum is 50.

The square root of 787457057 is about 28061.6652570727. The cubic root of 787457057 is about 923.4405892976.

The spelling of 787457057 in words is "seven hundred eighty-seven million, four hundred fifty-seven thousand, fifty-seven".