53815432 has 32 divisors (see below), whose sum is σ = 111484800. Its totient is φ = 24148800.

The previous prime is 53815417. The next prime is 53815439. The reversal of 53815432 is 23451835.

It is a super-2 number, since 2×53815432² = 5792201442693248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53815394 and 53815403.

It is not an unprimeable number, because it can be changed into a prime (53815439) 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, 3082 + ... + 10822.

It is an arithmetic number, because the mean of its divisors is an integer number (3483900).

Almost surely, 2^53815432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53815432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55742400).

53815432 is an abundant number, since it is smaller than the sum of its proper divisors (57669368).

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

53815432 is a wasteful number, since it uses less digits than its factorization.

53815432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7837 (or 7833 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 53815432 is about 7335.9002174239. The cubic root of 53815432 is about 377.5451917302.

The spelling of 53815432 in words is "fifty-three million, eight hundred fifteen thousand, four hundred thirty-two".