52737821 has 4 divisors (see below), whose sum is σ = 52857312. Its totient is φ = 52618332.

The previous prime is 52737779. The next prime is 52737869. The reversal of 52737821 is 12873725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52737821 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 (52737871) 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, 59081 + ... + 59966.

It is an arithmetic number, because the mean of its divisors is an integer number (13214328).

Almost surely, 2^52737821 is an apocalyptic number.

It is an amenable number.

52737821 is a deficient number, since it is larger than the sum of its proper divisors (119491).

52737821 is a wasteful number, since it uses less digits than its factorization.

52737821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119490.

The product of its digits is 23520, while the sum is 35.

The square root of 52737821 is about 7262.0810378293. The cubic root of 52737821 is about 375.0081681184.

The spelling of 52737821 in words is "fifty-two million, seven hundred thirty-seven thousand, eight hundred twenty-one".