157505020 has 24 divisors (see below), whose sum is σ = 332058384. Its totient is φ = 62754816.

The previous prime is 157505009. The next prime is 157505039. The reversal of 157505020 is 20505751.

It is a happy number.

157505020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10182 + ... + 20461.

It is an arithmetic number, because the mean of its divisors is an integer number (13835766).

Almost surely, 2^157505020 is an apocalyptic number.

157505020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157505020 is an abundant number, since it is smaller than the sum of its proper divisors (174553364).

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

157505020 is a wasteful number, since it uses less digits than its factorization.

157505020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909 (or 30907 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 157505020 is about 12550.1003980048. The cubic root of 157505020 is about 540.0468866467.

The spelling of 157505020 in words is "one hundred fifty-seven million, five hundred five thousand, twenty".