53840745 has 48 divisors (see below), whose sum is σ = 108501120. Its totient is φ = 24187392.

The previous prime is 53840713. The next prime is 53840747. The reversal of 53840745 is 54704835.

It is not a de Polignac number, because 53840745 - 2⁵ = 53840713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53840747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17137 + ... + 20033.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 2^53840745 is an apocalyptic number.

It is an amenable number.

53840745 is an abundant number, since it is smaller than the sum of its proper divisors (54660375).

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

53840745 is a wasteful number, since it uses less digits than its factorization.

53840745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 53840745 is about 7337.6252970563. The cubic root of 53840745 is about 377.6043773769.

The spelling of 53840745 in words is "fifty-three million, eight hundred forty thousand, seven hundred forty-five".