52651997 has 4 divisors (see below), whose sum is σ = 52681596. Its totient is φ = 52622400.

The previous prime is 52651961. The next prime is 52652003. The reversal of 52651997 is 79915625.

It is a happy number.

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 2114116 + 50537881 = 1454^2 + 7109^2 .

It is a cyclic number.

It is not a de Polignac number, because 52651997 - 2⁶ = 52651933 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 (52651957) 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, 11948 + ... + 15749.

It is an arithmetic number, because the mean of its divisors is an integer number (13170399).

Almost surely, 2^52651997 is an apocalyptic number.

It is an amenable number.

52651997 is a deficient number, since it is larger than the sum of its proper divisors (29599).

52651997 is a wasteful number, since it uses less digits than its factorization.

52651997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29598.

The product of its digits is 170100, while the sum is 44.

The square root of 52651997 is about 7256.1695818111. The cubic root of 52651997 is about 374.8046318641.

The spelling of 52651997 in words is "fifty-two million, six hundred fifty-one thousand, nine hundred ninety-seven".