52649431 has 4 divisors (see below), whose sum is σ = 52730712. Its totient is φ = 52568152.

The previous prime is 52649419. The next prime is 52649477. The reversal of 52649431 is 13494625.

It is a happy number.

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 52649431 - 2⁹ = 52648919 is a prime.

It is a super-2 number, since 2×52649431² = 5543925169247522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52646431) 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, 39661 + ... + 40966.

It is an arithmetic number, because the mean of its divisors is an integer number (13182678).

Almost surely, 2^52649431 is an apocalyptic number.

52649431 is a deficient number, since it is larger than the sum of its proper divisors (81281).

52649431 is an equidigital number, since it uses as much as digits as its factorization.

52649431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81280.

The product of its digits is 25920, while the sum is 34.

The square root of 52649431 is about 7255.9927646050. The cubic root of 52649431 is about 374.7985430522.

The spelling of 52649431 in words is "fifty-two million, six hundred forty-nine thousand, four hundred thirty-one".