157253478 has 32 divisors (see below), whose sum is σ = 324278016. Its totient is φ = 50800608.

The previous prime is 157253449. The next prime is 157253497. The reversal of 157253478 is 874352751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61575 + ... + 64077.

It is an arithmetic number, because the mean of its divisors is an integer number (10133688).

Almost surely, 2^157253478 is an apocalyptic number.

157253478 is an abundant number, since it is smaller than the sum of its proper divisors (167024538).

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

157253478 is a wasteful number, since it uses less digits than its factorization.

157253478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828.

The product of its digits is 235200, while the sum is 42.

The square root of 157253478 is about 12540.0748801592. The cubic root of 157253478 is about 539.7592410961.

The spelling of 157253478 in words is "one hundred fifty-seven million, two hundred fifty-three thousand, four hundred seventy-eight".