52737991 has 4 divisors (see below), whose sum is σ = 52767000. Its totient is φ = 52708984.

The previous prime is 52737989. The next prime is 52738001. The reversal of 52737991 is 19973725.

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 52737991 - 2¹ = 52737989 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 (52737941) 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, 11581 + ... + 15478.

It is an arithmetic number, because the mean of its divisors is an integer number (13191750).

Almost surely, 2^52737991 is an apocalyptic number.

52737991 is a deficient number, since it is larger than the sum of its proper divisors (29009).

52737991 is a wasteful number, since it uses less digits than its factorization.

52737991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29008.

The product of its digits is 119070, while the sum is 43.

The square root of 52737991 is about 7262.0927424538. The cubic root of 52737991 is about 375.0085710634.

The spelling of 52737991 in words is "fifty-two million, seven hundred thirty-seven thousand, nine hundred ninety-one".