52261389 has 16 divisors (see below), whose sum is σ = 78039040. Its totient is φ = 34564320.

The previous prime is 52261379. The next prime is 52261399. The reversal of 52261389 is 98316225.

52261389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52261379) and next prime (52261399).

It is not a de Polignac number, because 52261389 - 2⁹ = 52260877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52261309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4192 + ... + 11049.

It is an arithmetic number, because the mean of its divisors is an integer number (4877440).

Almost surely, 2^52261389 is an apocalyptic number.

It is an amenable number.

52261389 is a deficient number, since it is larger than the sum of its proper divisors (25777651).

52261389 is a wasteful number, since it uses less digits than its factorization.

52261389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377 (or 15371 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 52261389 is about 7229.2038980790. The cubic root of 52261389 is about 373.8754792455.

It can be divided in two parts, 52261 and 389, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 52261389 in words is "fifty-two million, two hundred sixty-one thousand, three hundred eighty-nine".