53839957 has 6 divisors (see below), whose sum is σ = 55012118. Its totient is φ = 52692264.

The previous prime is 53839943. The next prime is 53839991. The reversal of 53839957 is 75993835.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 11771761 = 6486^2 + 3431^2 .

It is not a de Polignac number, because 53839957 - 2¹¹ = 53837909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53839957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53839657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9978 + ... + 14395.

Almost surely, 2^53839957 is an apocalyptic number.

It is an amenable number.

53839957 is a deficient number, since it is larger than the sum of its proper divisors (1172161).

53839957 is an equidigital number, since it uses as much as digits as its factorization.

53839957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24467 (or 24420 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 53839957 is about 7337.5716010135. The cubic root of 53839957 is about 377.6025351927.

The spelling of 53839957 in words is "fifty-three million, eight hundred thirty-nine thousand, nine hundred fifty-seven".