157156478 has 4 divisors (see below), whose sum is σ = 235734720. Its totient is φ = 78578238.

The previous prime is 157156459. The next prime is 157156499. The reversal of 157156478 is 874651751.

157156478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39289118 + ... + 39289121.

It is an arithmetic number, because the mean of its divisors is an integer number (58933680).

Almost surely, 2^157156478 is an apocalyptic number.

157156478 is a deficient number, since it is larger than the sum of its proper divisors (78578242).

157156478 is an equidigital number, since it uses as much as digits as its factorization.

157156478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78578241.

The product of its digits is 235200, while the sum is 44.

The square root of 157156478 is about 12536.2066830441. The cubic root of 157156478 is about 539.6482368416.

The spelling of 157156478 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, four hundred seventy-eight".