252105418 has 16 divisors (see below), whose sum is σ = 386224200. Its totient is φ = 123375616.

The previous prime is 252105409. The next prime is 252105449. The reversal of 252105418 is 814501252.

252105418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 251444449 + 660969 = 15857^2 + 813^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44946 + ... + 50242.

Almost surely, 2^252105418 is an apocalyptic number.

252105418 is a deficient number, since it is larger than the sum of its proper divisors (134118782).

252105418 is a wasteful number, since it uses less digits than its factorization.

252105418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 252105418 is about 15877.8278741143. The cubic root of 252105418 is about 631.7240239415.

It can be divided in two parts, 25210 and 5418, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 252105418 in words is "two hundred fifty-two million, one hundred five thousand, four hundred eighteen".