53101312 has 72 divisors (see below), whose sum is σ = 117366480. Its totient is φ = 23777280.

The previous prime is 53101267. The next prime is 53101313. The reversal of 53101312 is 21310135.

It is a super-2 number, since 2×53101312² = 5639498672242688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (53101313) 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, 306858 + ... + 307030.

It is an arithmetic number, because the mean of its divisors is an integer number (1630090).

Almost surely, 2^53101312 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 53101312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58683240).

53101312 is an abundant number, since it is smaller than the sum of its proper divisors (64265168).

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

53101312 is a wasteful number, since it uses less digits than its factorization.

53101312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 53101312 is about 7287.0647039806. The cubic root of 53101312 is about 375.8677669915.

Adding to 53101312 its reverse (21310135), we get a palindrome (74411447).

The spelling of 53101312 in words is "fifty-three million, one hundred one thousand, three hundred twelve".