53502861 has 8 divisors (see below), whose sum is σ = 71436640. Its totient is φ = 35618832.

The previous prime is 53502857. The next prime is 53502871. The reversal of 53502861 is 16820535.

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

It is not a de Polignac number, because 53502861 - 2² = 53502857 is a prime.

It is a super-2 number, since 2×53502861² = 5725112270370642, 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 (53502821) 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, 9850 + ... + 14283.

It is an arithmetic number, because the mean of its divisors is an integer number (8929580).

Almost surely, 2^53502861 is an apocalyptic number.

It is an amenable number.

53502861 is a deficient number, since it is larger than the sum of its proper divisors (17933779).

53502861 is a wasteful number, since it uses less digits than its factorization.

53502861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24875.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 53502861 is about 7314.5649904830. The cubic root of 53502861 is about 376.8128188241.

The spelling of 53502861 in words is "fifty-three million, five hundred two thousand, eight hundred sixty-one".