53333731 has 8 divisors (see below), whose sum is σ = 58235328. Its totient is φ = 48441000.

The previous prime is 53333729. The next prime is 53333747. The reversal of 53333731 is 13733335.

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

It is a cyclic number.

It is not a de Polignac number, because 53333731 - 2¹ = 53333729 is a prime.

It is a super-2 number, since 2×53333731² = 5688973724760722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53333731.

It is not an unprimeable number, because it can be changed into a prime (53333771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20916 + ... + 23326.

It is an arithmetic number, because the mean of its divisors is an integer number (7279416).

Almost surely, 2^53333731 is an apocalyptic number.

53333731 is a deficient number, since it is larger than the sum of its proper divisors (4901597).

53333731 is a wasteful number, since it uses less digits than its factorization.

53333731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its digits is 8505, while the sum is 28.

The square root of 53333731 is about 7302.9946597269. The cubic root of 53333731 is about 376.4153470967.

The spelling of 53333731 in words is "fifty-three million, three hundred thirty-three thousand, seven hundred thirty-one".