52145988 has 24 divisors (see below), whose sum is σ = 121867200. Its totient is φ = 17354400.

The previous prime is 52145981. The next prime is 52145993. The reversal of 52145988 is 88954125.

It is a happy number.

It is a super-2 number, since 2×52145988² = 5438408128992288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52145981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5313 + ... + 11511.

It is an arithmetic number, because the mean of its divisors is an integer number (5077800).

Almost surely, 2^52145988 is an apocalyptic number.

It is an amenable number.

52145988 is an abundant number, since it is smaller than the sum of its proper divisors (69721212).

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

52145988 is a wasteful number, since it uses less digits than its factorization.

52145988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907 (or 6905 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 52145988 is about 7221.2179028194. The cubic root of 52145988 is about 373.6000853627.

The spelling of 52145988 in words is "fifty-two million, one hundred forty-five thousand, nine hundred eighty-eight".