252400045 has 16 divisors (see below), whose sum is σ = 322019712. Its totient is φ = 189492160.

The previous prime is 252400039. The next prime is 252400061. The reversal of 252400045 is 540004252.

It is not a de Polignac number, because 252400045 - 2¹⁵ = 252367277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252399989 and 252400025.

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, 14611 + ... + 26800.

It is an arithmetic number, because the mean of its divisors is an integer number (20126232).

Almost surely, 2^252400045 is an apocalyptic number.

It is an amenable number.

252400045 is a deficient number, since it is larger than the sum of its proper divisors (69619667).

252400045 is a wasteful number, since it uses less digits than its factorization.

252400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41492.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 252400045 is about 15887.1031028316. The cubic root of 252400045 is about 631.9700195747.

Adding to 252400045 its reverse (540004252), we get a palindrome (792404297).

The spelling of 252400045 in words is "two hundred fifty-two million, four hundred thousand, forty-five".