157251998 has 16 divisors (see below), whose sum is σ = 242715120. Its totient is φ = 76355136.

The previous prime is 157251977. The next prime is 157252013. The reversal of 157251998 is 899152751.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44090 + ... + 47522.

It is an arithmetic number, because the mean of its divisors is an integer number (15169695).

Almost surely, 2^157251998 is an apocalyptic number.

157251998 is a deficient number, since it is larger than the sum of its proper divisors (85463122).

157251998 is a wasteful number, since it uses less digits than its factorization.

157251998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its digits is 226800, while the sum is 47.

The square root of 157251998 is about 12540.0158692085. The cubic root of 157251998 is about 539.7575477660.

The spelling of 157251998 in words is "one hundred fifty-seven million, two hundred fifty-one thousand, nine hundred ninety-eight".