157531478 has 8 divisors (see below), whose sum is σ = 254473968. Its totient is φ = 72706824.

The previous prime is 157531457. The next prime is 157531481. The reversal of 157531478 is 874135751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3029426 + ... + 3029477.

It is an arithmetic number, because the mean of its divisors is an integer number (31809246).

Almost surely, 2^157531478 is an apocalyptic number.

157531478 is a deficient number, since it is larger than the sum of its proper divisors (96942490).

157531478 is a wasteful number, since it uses less digits than its factorization.

157531478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058918.

The product of its digits is 117600, while the sum is 41.

The square root of 157531478 is about 12551.1544488943. The cubic root of 157531478 is about 540.0771243296.

The spelling of 157531478 in words is "one hundred fifty-seven million, five hundred thirty-one thousand, four hundred seventy-eight".