52878031 has 4 divisors (see below), whose sum is σ = 53622864. Its totient is φ = 52133200.

The previous prime is 52878029. The next prime is 52878043. The reversal of 52878031 is 13087825.

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 52878031 - 2¹ = 52878029 is a prime.

It is a super-2 number, since 2×52878031² = 5592172324873922, 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 (52878131) 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, 372310 + ... + 372451.

It is an arithmetic number, because the mean of its divisors is an integer number (13405716).

Almost surely, 2^52878031 is an apocalyptic number.

52878031 is a deficient number, since it is larger than the sum of its proper divisors (744833).

52878031 is an equidigital number, since it uses as much as digits as its factorization.

52878031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744832.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 52878031 is about 7271.7281989909. The cubic root of 52878031 is about 375.3402091865.

The spelling of 52878031 in words is "fifty-two million, eight hundred seventy-eight thousand, thirty-one".