53157500 has 60 divisors (see below), whose sum is σ = 126878136. Its totient is φ = 19320000.

The previous prime is 53157491. The next prime is 53157523. The reversal of 53157500 is 575135.

It is a self number, because there is not a number n which added to its sum of digits gives 53157500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26534 + ... + 28466.

Almost surely, 2^53157500 is an apocalyptic number.

53157500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53157500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63439068).

53157500 is an abundant number, since it is smaller than the sum of its proper divisors (73720636).

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

53157500 is a wasteful number, since it uses less digits than its factorization.

53157500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 53157500 is about 7290.9190092882. The cubic root of 53157500 is about 376.0002923643. Note that the first 3 decimals are identical.

The spelling of 53157500 in words is "fifty-three million, one hundred fifty-seven thousand, five hundred".