157399515 has 216 divisors, whose sum is σ = 382178160. Its totient is φ = 59222016.

The previous prime is 157399469. The next prime is 157399519. The reversal of 157399515 is 515993751.

It is not a de Polignac number, because 157399515 - 2¹² = 157395419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (157399519) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8284176 + ... + 8284194.

Almost surely, 2^157399515 is an apocalyptic number.

157399515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157399515 is an abundant number, since it is smaller than the sum of its proper divisors (224778645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157399515 is a wasteful number, since it uses less digits than its factorization.

157399515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 64 counting only the distinct ones).

The product of its digits is 212625, while the sum is 45.

The square root of 157399515 is about 12545.8963410352. The cubic root of 157399515 is about 539.9262759434.

The spelling of 157399515 in words is "one hundred fifty-seven million, three hundred ninety-nine thousand, five hundred fifteen".