157551885 has 40 divisors (see below), whose sum is σ = 286348920. Its totient is φ = 82876608.

The previous prime is 157551851. The next prime is 157551893. The reversal of 157551885 is 588155751.

157551885 is a `hidden beast` number, since 1 + 57 + 5 + 518 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 149769 + 157402116 = 387^2 + 12546^2 .

It is not a de Polignac number, because 157551885 - 2¹³ = 157543693 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 157551885.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2158209 + ... + 2158281.

It is an arithmetic number, because the mean of its divisors is an integer number (7158723).

Almost surely, 2^157551885 is an apocalyptic number.

157551885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157551885 is a deficient number, since it is larger than the sum of its proper divisors (128797035).

157551885 is an frugal number, since it uses more digits than its factorization.

157551885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 81 counting only the distinct ones).

The product of its digits is 280000, while the sum is 45.

The square root of 157551885 is about 12551.9673756746. The cubic root of 157551885 is about 540.1004442784.

The spelling of 157551885 in words is "one hundred fifty-seven million, five hundred fifty-one thousand, eight hundred eighty-five".