53591772 has 48 divisors (see below), whose sum is σ = 136321920. Its totient is φ = 16287168.

The previous prime is 53591743. The next prime is 53591779. The reversal of 53591772 is 27719535.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 53591772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53591779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10879 + ... + 15017.

It is an arithmetic number, because the mean of its divisors is an integer number (2840040).

Almost surely, 2^53591772 is an apocalyptic number.

53591772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53591772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68160960).

53591772 is an abundant number, since it is smaller than the sum of its proper divisors (82730148).

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

53591772 is a wasteful number, since it uses less digits than its factorization.

53591772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242 (or 4240 counting only the distinct ones).

The product of its digits is 66150, while the sum is 39.

The square root of 53591772 is about 7320.6401359444. The cubic root of 53591772 is about 377.0214323618.

The spelling of 53591772 in words is "fifty-three million, five hundred ninety-one thousand, seven hundred seventy-two".