157551534 has 64 divisors (see below), whose sum is σ = 421209600. Its totient is φ = 42643584.

The previous prime is 157551523. The next prime is 157551551. The reversal of 157551534 is 435155751.

It is a happy number.

157551534 is a `hidden beast` number, since 1 + 5 + 75 + 51 + 534 = 666.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3787 + ... + 18150.

It is an arithmetic number, because the mean of its divisors is an integer number (6581400).

Almost surely, 2^157551534 is an apocalyptic number.

157551534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

157551534 is an abundant number, since it is smaller than the sum of its proper divisors (263658066).

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

157551534 is a wasteful number, since it uses less digits than its factorization.

157551534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21974 (or 21968 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 157551534 is about 12551.9533937949. The cubic root of 157551534 is about 540.1000431927.

The spelling of 157551534 in words is "one hundred fifty-seven million, five hundred fifty-one thousand, five hundred thirty-four".