52156819 has 16 divisors (see below), whose sum is σ = 63393120. Its totient is φ = 42255360.

The previous prime is 52156781. The next prime is 52156837. The reversal of 52156819 is 91865125.

It is a cyclic number.

It is not a de Polignac number, because 52156819 - 2²³ = 43768211 is a prime.

It is a super-2 number, since 2×52156819² = 5440667536397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52156889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142 + ... + 10435.

It is an arithmetic number, because the mean of its divisors is an integer number (3962070).

Almost surely, 2^52156819 is an apocalyptic number.

52156819 is a deficient number, since it is larger than the sum of its proper divisors (11236301).

52156819 is a wasteful number, since it uses less digits than its factorization.

52156819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12630.

The product of its digits is 21600, while the sum is 37.

The square root of 52156819 is about 7221.9678066300. The cubic root of 52156819 is about 373.6259498159.

It can be divided in two parts, 52156 and 819, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 52156819 in words is "fifty-two million, one hundred fifty-six thousand, eight hundred nineteen".