157156490 has 16 divisors (see below), whose sum is σ = 285799752. Its totient is φ = 62214144.

The previous prime is 157156459. The next prime is 157156499. The reversal of 157156490 is 94651751.

It can be written as a sum of positive squares in 4 ways, for example, as 100741369 + 56415121 = 10037^2 + 7511^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157156499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80039 + ... + 81978.

Almost surely, 2^157156490 is an apocalyptic number.

157156490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157156490 is a deficient number, since it is larger than the sum of its proper divisors (128643262).

157156490 is a wasteful number, since it uses less digits than its factorization.

157156490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162121.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 157156490 is about 12536.2071616578. The cubic root of 157156490 is about 539.6482505770.

The spelling of 157156490 in words is "one hundred fifty-seven million, one hundred fifty-six thousand, four hundred ninety".