451720057 has 2 divisors, whose sum is σ = 451720058. Its totient is φ = 451720056.

The previous prime is 451720051. The next prime is 451720111. The reversal of 451720057 is 750027154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280529001 + 171191056 = 16749^2 + 13084^2 .

It is a cyclic number.

It is not a de Polignac number, because 451720057 - 2¹⁵ = 451687289 is a prime.

It is not a weakly prime, because it can be changed into another prime (451720051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225860028 + 225860029.

It is an arithmetic number, because the mean of its divisors is an integer number (225860029).

Almost surely, 2^451720057 is an apocalyptic number.

It is an amenable number.

451720057 is a deficient number, since it is larger than the sum of its proper divisors (1).

451720057 is an equidigital number, since it uses as much as digits as its factorization.

451720057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 451720057 is about 21253.7069002092. The cubic root of 451720057 is about 767.2845583588.

The spelling of 451720057 in words is "four hundred fifty-one million, seven hundred twenty thousand, fifty-seven".