455940557 has 2 divisors, whose sum is σ = 455940558. Its totient is φ = 455940556.

The previous prime is 455940547. The next prime is 455940559. The reversal of 455940557 is 755049554.

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., 427414276 + 28526281 = 20674^2 + 5341^2 .

It is a cyclic number.

It is not a de Polignac number, because 455940557 - 2⁸ = 455940301 is a prime.

Together with 455940559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455940559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227970278 + 227970279.

It is an arithmetic number, because the mean of its divisors is an integer number (227970279).

Almost surely, 2^455940557 is an apocalyptic number.

It is an amenable number.

455940557 is a deficient number, since it is larger than the sum of its proper divisors (1).

455940557 is an equidigital number, since it uses as much as digits as its factorization.

455940557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630000, while the sum is 44.

The square root of 455940557 is about 21352.7646219406. The cubic root of 455940557 is about 769.6667794141. Note that the first 3 decimals are identical.

The spelling of 455940557 in words is "four hundred fifty-five million, nine hundred forty thousand, five hundred fifty-seven".