53542644 has 12 divisors (see below), whose sum is σ = 124932864. Its totient is φ = 17847544.

The previous prime is 53542633. The next prime is 53542651. The reversal of 53542644 is 44624535.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230932 + ... + 2230955.

It is an arithmetic number, because the mean of its divisors is an integer number (10411072).

Almost surely, 2^53542644 is an apocalyptic number.

It is an amenable number.

53542644 is an abundant number, since it is smaller than the sum of its proper divisors (71390220).

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

53542644 is a wasteful number, since it uses less digits than its factorization.

53542644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461894 (or 4461892 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 53542644 is about 7317.2839223307. The cubic root of 53542644 is about 376.9061909671.

The spelling of 53542644 in words is "fifty-three million, five hundred forty-two thousand, six hundred forty-four".