52691290 has 8 divisors (see below), whose sum is σ = 94844340. Its totient is φ = 21076512.

The previous prime is 52691281. The next prime is 52691311. The reversal of 52691290 is 9219625.

It can be written as a sum of positive squares in 2 ways, for example, as 49660209 + 3031081 = 7047^2 + 1741^2 .

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, 2634555 + ... + 2634574.

Almost surely, 2^52691290 is an apocalyptic number.

52691290 is a deficient number, since it is larger than the sum of its proper divisors (42153050).

52691290 is a wasteful number, since it uses less digits than its factorization.

52691290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269136.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 52691290 is about 7258.8766348520. The cubic root of 52691290 is about 374.8978447666.

The spelling of 52691290 in words is "fifty-two million, six hundred ninety-one thousand, two hundred ninety".