53992957 has 4 divisors (see below), whose sum is σ = 54033436. Its totient is φ = 53952480.

The previous prime is 53992943. The next prime is 53992963. The reversal of 53992957 is 75929935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23290276 + 30702681 = 4826^2 + 5541^2 .

It is a cyclic number.

It is not a de Polignac number, because 53992957 - 2¹⁵ = 53960189 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 53992957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53992987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18168 + ... + 20929.

It is an arithmetic number, because the mean of its divisors is an integer number (13508359).

Almost surely, 2^53992957 is an apocalyptic number.

It is an amenable number.

53992957 is a deficient number, since it is larger than the sum of its proper divisors (40479).

53992957 is a wasteful number, since it uses less digits than its factorization.

53992957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40478.

The product of its digits is 765450, while the sum is 49.

The square root of 53992957 is about 7347.9899972714. The cubic root of 53992957 is about 377.9598816170.

The spelling of 53992957 in words is "fifty-three million, nine hundred ninety-two thousand, nine hundred fifty-seven".