157561075 has 12 divisors (see below), whose sum is σ = 223286800. Its totient is φ = 108041760.

The previous prime is 157561069. The next prime is 157561081. The reversal of 157561075 is 570165751.

It is an interprime number because it is at equal distance from previous prime (157561069) and next prime (157561081).

It is not a de Polignac number, because 157561075 - 2³ = 157561067 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450000 + ... + 450349.

Almost surely, 2^157561075 is an apocalyptic number.

157561075 is a deficient number, since it is larger than the sum of its proper divisors (65725725).

157561075 is an equidigital number, since it uses as much as digits as its factorization.

157561075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900366 (or 900361 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 157561075 is about 12552.3334484071. Note that the first 3 decimals coincide. The cubic root of 157561075 is about 540.1109454255.

The spelling of 157561075 in words is "one hundred fifty-seven million, five hundred sixty-one thousand, seventy-five".