52403731 has 4 divisors (see below), whose sum is σ = 53518752. Its totient is φ = 51288712.

The previous prime is 52403723. The next prime is 52403737. The reversal of 52403731 is 13730425.

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 52403731 - 2³ = 52403723 is a prime.

It is a super-2 number, since 2×52403731² = 5492302045440722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52403696 and 52403705.

It is not an unprimeable number, because it can be changed into a prime (52403737) 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, 557440 + ... + 557533.

It is an arithmetic number, because the mean of its divisors is an integer number (13379688).

Almost surely, 2^52403731 is an apocalyptic number.

52403731 is a deficient number, since it is larger than the sum of its proper divisors (1115021).

52403731 is a wasteful number, since it uses less digits than its factorization.

52403731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115020.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 52403731 is about 7239.0421327687. The cubic root of 52403731 is about 374.2146074973.

The spelling of 52403731 in words is "fifty-two million, four hundred three thousand, seven hundred thirty-one".