157827531 has 16 divisors (see below), whose sum is σ = 213016320. Its totient is φ = 103934880.

The previous prime is 157827503. The next prime is 157827539. The reversal of 157827531 is 135728751.

157827531 = T₁ + T₂ + ... + T₉₈₁.

157827531 is a nontrivial binomial coefficient, being equal to C(983, 3).

It is not a de Polignac number, because 157827531 - 2¹⁷ = 157696459 is a prime.

It is a super-2 number, since 2×157827531² = 49819059083111922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157827531.

It is not an unprimeable number, because it can be changed into a prime (157827539) by changing a digit.

It is the 981-st tetrahedral number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160066 + ... + 161048.

It is an arithmetic number, because the mean of its divisors is an integer number (13313520).

Almost surely, 2^157827531 is an apocalyptic number.

157827531 is a deficient number, since it is larger than the sum of its proper divisors (55188789).

157827531 is a wasteful number, since it uses less digits than its factorization.

157827531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its digits is 58800, while the sum is 39.

The square root of 157827531 is about 12562.9427683167. The cubic root of 157827531 is about 540.4152395995.

The spelling of 157827531 in words is "one hundred fifty-seven million, eight hundred twenty-seven thousand, five hundred thirty-one".