157253994 has 32 divisors (see below), whose sum is σ = 367848000. Its totient is φ = 49658832.

The previous prime is 157253989. The next prime is 157254001. The reversal of 157253994 is 499352751.

It is a happy number.

157253994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75609 + ... + 77660.

It is an arithmetic number, because the mean of its divisors is an integer number (11495250).

Almost surely, 2^157253994 is an apocalyptic number.

157253994 is an abundant number, since it is smaller than the sum of its proper divisors (210594006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157253994 is a wasteful number, since it uses less digits than its factorization.

157253994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153299 (or 153293 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 157253994 is about 12540.0954541822. The cubic root of 157253994 is about 539.7598314709.

The spelling of 157253994 in words is "one hundred fifty-seven million, two hundred fifty-three thousand, nine hundred ninety-four".