157256506 has 8 divisors (see below), whose sum is σ = 257328864. Its totient is φ = 71480220.

The previous prime is 157256467. The next prime is 157256513. The reversal of 157256506 is 605652751.

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

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, 3573990 + ... + 3574033.

It is an arithmetic number, because the mean of its divisors is an integer number (32166108).

Almost surely, 2^157256506 is an apocalyptic number.

157256506 is a deficient number, since it is larger than the sum of its proper divisors (100072358).

157256506 is a wasteful number, since it uses less digits than its factorization.

157256506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148036.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 157256506 is about 12540.1956125094. The cubic root of 157256506 is about 539.7627055251.

The spelling of 157256506 in words is "one hundred fifty-seven million, two hundred fifty-six thousand, five hundred six".