52212405 has 16 divisors (see below), whose sum is σ = 95474304. Its totient is φ = 23868480.

The previous prime is 52212379. The next prime is 52212427. The reversal of 52212405 is 50421225.

It is a happy number.

It is not a de Polignac number, because 52212405 - 2⁵ = 52212373 is a prime.

It is a super-2 number, since 2×52212405² = 5452270471768050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248526 + ... + 248735.

It is an arithmetic number, because the mean of its divisors is an integer number (5967144).

Almost surely, 2^52212405 is an apocalyptic number.

It is an amenable number.

52212405 is a deficient number, since it is larger than the sum of its proper divisors (43261899).

52212405 is a wasteful number, since it uses less digits than its factorization.

52212405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497276.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52212405 is about 7225.8151789262. The cubic root of 52212405 is about 373.7586330001.

It can be divided in two parts, 5221 and 2405, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 52212405 in words is "fifty-two million, two hundred twelve thousand, four hundred five".