157005998 has 8 divisors (see below), whose sum is σ = 237669960. Its totient is φ = 77782680.

The previous prime is 157005983. The next prime is 157006007. The reversal of 157005998 is 899500751.

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, 359888 + ... + 360323.

It is an arithmetic number, because the mean of its divisors is an integer number (29708745).

Almost surely, 2^157005998 is an apocalyptic number.

157005998 is a deficient number, since it is larger than the sum of its proper divisors (80663962).

157005998 is a wasteful number, since it uses less digits than its factorization.

157005998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720322.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 157005998 is about 12530.2034301124. The cubic root of 157005998 is about 539.4759410502.

The spelling of 157005998 in words is "one hundred fifty-seven million, five thousand, nine hundred ninety-eight".