157457405 has 16 divisors (see below), whose sum is σ = 216276480. Its totient is φ = 107803392.

The previous prime is 157457381. The next prime is 157457411. The reversal of 157457405 is 504754751.

It is a cyclic number.

It is not a de Polignac number, because 157457405 - 2²⁰ = 156408829 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22037 + ... + 28293.

It is an arithmetic number, because the mean of its divisors is an integer number (13517280).

Almost surely, 2^157457405 is an apocalyptic number.

It is an amenable number.

157457405 is a deficient number, since it is larger than the sum of its proper divisors (58819075).

157457405 is an equidigital number, since it uses as much as digits as its factorization.

157457405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 157457405 is about 12548.2032578374. The cubic root of 157457405 is about 539.9924610287.

The spelling of 157457405 in words is "one hundred fifty-seven million, four hundred fifty-seven thousand, four hundred five".