52696721 has 8 divisors (see below), whose sum is σ = 65699904. Its totient is φ = 41062320.

The previous prime is 52696717. The next prime is 52696723. The reversal of 52696721 is 12769625.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52696721 - 2² = 52696717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52696723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342110 + ... + 342263.

It is an arithmetic number, because the mean of its divisors is an integer number (8212488).

Almost surely, 2^52696721 is an apocalyptic number.

It is an amenable number.

52696721 is a deficient number, since it is larger than the sum of its proper divisors (13003183).

52696721 is a wasteful number, since it uses less digits than its factorization.

52696721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684391.

The product of its digits is 45360, while the sum is 38.

The square root of 52696721 is about 7259.2507189103. The cubic root of 52696721 is about 374.9107248223.

The spelling of 52696721 in words is "fifty-two million, six hundred ninety-six thousand, seven hundred twenty-one".