157244401 has 2 divisors, whose sum is σ = 157244402. Its totient is φ = 157244400.

The previous prime is 157244357. The next prime is 157244411. The reversal of 157244401 is 104442751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153784801 + 3459600 = 12401^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 157244401 - 2⁷ = 157244273 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157244401.

It is not a weakly prime, because it can be changed into another prime (157244411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78622200 + 78622201.

It is an arithmetic number, because the mean of its divisors is an integer number (78622201).

Almost surely, 2^157244401 is an apocalyptic number.

It is an amenable number.

157244401 is a deficient number, since it is larger than the sum of its proper divisors (1).

157244401 is an equidigital number, since it uses as much as digits as its factorization.

157244401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 157244401 is about 12539.7129552474. The cubic root of 157244401 is about 539.7488555518.

The spelling of 157244401 in words is "one hundred fifty-seven million, two hundred forty-four thousand, four hundred one".