53391132 has 18 divisors (see below), whose sum is σ = 134961008. Its totient is φ = 17797032.

The previous prime is 53391131. The next prime is 53391133. The reversal of 53391132 is 23119335.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53391131) and next prime (53391133).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×53391132² = 5701225952482848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53391096 and 53391105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53391131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 741508 + ... + 741579.

Almost surely, 2^53391132 is an apocalyptic number.

It is an amenable number.

53391132 is an abundant number, since it is smaller than the sum of its proper divisors (81569876).

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

53391132 is a wasteful number, since it uses less digits than its factorization.

53391132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483097 (or 1483092 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 53391132 is about 7306.9235660434. The cubic root of 53391132 is about 376.5503390309.

The spelling of 53391132 in words is "fifty-three million, three hundred ninety-one thousand, one hundred thirty-two".