157472807 has 4 divisors (see below), whose sum is σ = 159096336. Its totient is φ = 155849280.

The previous prime is 157472801. The next prime is 157472827. The reversal of 157472807 is 708274751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708274751 = 4549 ⋅155699.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157472807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157472801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811619 + ... + 811812.

It is an arithmetic number, because the mean of its divisors is an integer number (39774084).

Almost surely, 2^157472807 is an apocalyptic number.

157472807 is a deficient number, since it is larger than the sum of its proper divisors (1623529).

157472807 is an equidigital number, since it uses as much as digits as its factorization.

157472807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623528.

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 157472807 is about 12548.8169561915. The cubic root of 157472807 is about 540.0100672563.

The spelling of 157472807 in words is "one hundred fifty-seven million, four hundred seventy-two thousand, eight hundred seven".