53572639 has 4 divisors (see below), whose sum is σ = 53914024. Its totient is φ = 53231256.

The previous prime is 53572637. The next prime is 53572663. The reversal of 53572639 is 93627535.

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

It is a cyclic number.

It is not a de Polignac number, because 53572639 - 2¹ = 53572637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53572637) 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, 170457 + ... + 170770.

It is an arithmetic number, because the mean of its divisors is an integer number (13478506).

Almost surely, 2^53572639 is an apocalyptic number.

53572639 is a deficient number, since it is larger than the sum of its proper divisors (341385).

53572639 is a wasteful number, since it uses less digits than its factorization.

53572639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341384.

The product of its digits is 170100, while the sum is 40.

The square root of 53572639 is about 7319.3332346601. Note that the first 3 decimals coincide. The cubic root of 53572639 is about 376.9765597417.

The spelling of 53572639 in words is "fifty-three million, five hundred seventy-two thousand, six hundred thirty-nine".