157542793 has 2 divisors, whose sum is σ = 157542794. Its totient is φ = 157542792.

The previous prime is 157542779. The next prime is 157542817. The reversal of 157542793 is 397245751.

157542793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 71368704 = 9283^2 + 8448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157542793 is a prime.

It is not a weakly prime, because it can be changed into another prime (157542293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78771396 + 78771397.

It is an arithmetic number, because the mean of its divisors is an integer number (78771397).

Almost surely, 2^157542793 is an apocalyptic number.

It is an amenable number.

157542793 is a deficient number, since it is larger than the sum of its proper divisors (1).

157542793 is an equidigital number, since it uses as much as digits as its factorization.

157542793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 43.

The square root of 157542793 is about 12551.6051961492. The cubic root of 157542793 is about 540.0900547111.

The spelling of 157542793 in words is "one hundred fifty-seven million, five hundred forty-two thousand, seven hundred ninety-three".