52251432 has 16 divisors (see below), whose sum is σ = 130628640. Its totient is φ = 17417136.

The previous prime is 52251401. The next prime is 52251449. The reversal of 52251432 is 23415225.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2177143 = 52251432 / (5 + 2 + 2 + 5 + 1 + 4 + 3 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088548 + ... + 1088595.

It is an arithmetic number, because the mean of its divisors is an integer number (8164290).

Almost surely, 2^52251432 is an apocalyptic number.

It is an amenable number.

52251432 is an abundant number, since it is smaller than the sum of its proper divisors (78377208).

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

52251432 is a wasteful number, since it uses less digits than its factorization.

52251432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177152 (or 2177148 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 52251432 is about 7228.5152002330. The cubic root of 52251432 is about 373.8517337701.

Adding to 52251432 its reverse (23415225), we get a palindrome (75666657).

The spelling of 52251432 in words is "fifty-two million, two hundred fifty-one thousand, four hundred thirty-two".