53897228244 has 18 divisors (see below), whose sum is σ = 136240215930. Its totient is φ = 17965742736.

The previous prime is 53897228201. The next prime is 53897228267. The reversal of 53897228244 is 44282279835.

53897228244 is a `hidden beast` number, since 538 + 9 + 7 + 22 + 82 + 4 + 4 = 666.

53897228244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 49612216644 + 4285011600 = 222738^2 + 65460^2 .

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

It is a super-2 number, since 2×53897228244² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 748572579 + ... + 748572650.

It is an arithmetic number, because the mean of its divisors is an integer number (7568900885).

Almost surely, 2^53897228244 is an apocalyptic number.

It is an amenable number.

53897228244 is an abundant number, since it is smaller than the sum of its proper divisors (82342987686).

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

53897228244 is a wasteful number, since it uses less digits than its factorization.

53897228244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497145239 (or 1497145234 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 53897228244 in words is "fifty-three billion, eight hundred ninety-seven million, two hundred twenty-eight thousand, two hundred forty-four".