157018457 has 2 divisors, whose sum is σ = 157018458. Its totient is φ = 157018456.

The previous prime is 157018439. The next prime is 157018483. The reversal of 157018457 is 754810751.

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., 103713856 + 53304601 = 10184^2 + 7301^2 .

It is a cyclic number.

It is not a de Polignac number, because 157018457 - 2¹⁰ = 157017433 is a prime.

It is equal to p_8816654 and since 157018457 and 8816654 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157018457.

It is not a weakly prime, because it can be changed into another prime (157018427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78509228 + 78509229.

It is an arithmetic number, because the mean of its divisors is an integer number (78509229).

Almost surely, 2^157018457 is an apocalyptic number.

It is an amenable number.

157018457 is a deficient number, since it is larger than the sum of its proper divisors (1).

157018457 is an equidigital number, since it uses as much as digits as its factorization.

157018457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 157018457 is about 12530.7005789780. The cubic root of 157018457 is about 539.4902104689.

The spelling of 157018457 in words is "one hundred fifty-seven million, eighteen thousand, four hundred fifty-seven".