53131998 has 32 divisors (see below), whose sum is σ = 108490752. Its totient is φ = 17343200.

The previous prime is 53131993. The next prime is 53132011. The reversal of 53131998 is 89913135.

It is a super-3 number, since 3×53131998³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53131993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81040 + ... + 81692.

It is an arithmetic number, because the mean of its divisors is an integer number (3390336).

Almost surely, 2^53131998 is an apocalyptic number.

53131998 is an abundant number, since it is smaller than the sum of its proper divisors (55358754).

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

53131998 is a wasteful number, since it uses less digits than its factorization.

53131998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its digits is 29160, while the sum is 39.

The square root of 53131998 is about 7289.1699115880. The cubic root of 53131998 is about 375.9401547654.

The spelling of 53131998 in words is "fifty-three million, one hundred thirty-one thousand, nine hundred ninety-eight".