456405557 has 2 divisors, whose sum is σ = 456405558. Its totient is φ = 456405556.

The previous prime is 456405553. The next prime is 456405571. The reversal of 456405557 is 755504654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424607236 + 31798321 = 20606^2 + 5639^2 .

It is a cyclic number.

It is not a de Polignac number, because 456405557 - 2² = 456405553 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456405553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228202778 + 228202779.

It is an arithmetic number, because the mean of its divisors is an integer number (228202779).

Almost surely, 2^456405557 is an apocalyptic number.

It is an amenable number.

456405557 is a deficient number, since it is larger than the sum of its proper divisors (1).

456405557 is an equidigital number, since it uses as much as digits as its factorization.

456405557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420000, while the sum is 41.

The square root of 456405557 is about 21363.6503669200. The cubic root of 456405557 is about 769.9283438126.

The spelling of 456405557 in words is "four hundred fifty-six million, four hundred five thousand, five hundred fifty-seven".