52691642 has 8 divisors (see below), whose sum is σ = 80965332. Its totient is φ = 25703200.

The previous prime is 52691627. The next prime is 52691659. The reversal of 52691642 is 24619625.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52548001 + 143641 = 7249^2 + 379^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321209 + ... + 321372.

Almost surely, 2^52691642 is an apocalyptic number.

52691642 is a deficient number, since it is larger than the sum of its proper divisors (28273690).

52691642 is a wasteful number, since it uses less digits than its factorization.

52691642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642624.

The product of its digits is 25920, while the sum is 35.

The square root of 52691642 is about 7258.9008809874. The cubic root of 52691642 is about 374.8986795899.

The spelling of 52691642 in words is "fifty-two million, six hundred ninety-one thousand, six hundred forty-two".