52878431 has 8 divisors (see below), whose sum is σ = 54119424. Its totient is φ = 51642360.

The previous prime is 52878401. The next prime is 52878443. The reversal of 52878431 is 13487825.

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 52878431 - 2⁶ = 52878367 is a prime.

It is a super-2 number, since 2×52878431² = 5592256930043522, 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 (52878401) 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, 28766 + ... + 30548.

It is an arithmetic number, because the mean of its divisors is an integer number (6764928).

Almost surely, 2^52878431 is an apocalyptic number.

52878431 is a deficient number, since it is larger than the sum of its proper divisors (1240993).

52878431 is a wasteful number, since it uses less digits than its factorization.

52878431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its digits is 53760, while the sum is 38.

The square root of 52878431 is about 7271.7557027172. The cubic root of 52878431 is about 375.3411556142.

The spelling of 52878431 in words is "fifty-two million, eight hundred seventy-eight thousand, four hundred thirty-one".