40512252 has 36 divisors (see below), whose sum is σ = 103907048. Its totient is φ = 12276000.

The previous prime is 40512247. The next prime is 40512253. The reversal of 40512252 is 25221504.

It is a happy number.

It is a super-2 number, since 2×40512252² = 3282485124223008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40512253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12499 + ... + 15402.

Almost surely, 2^40512252 is an apocalyptic number.

It is an amenable number.

40512252 is an abundant number, since it is smaller than the sum of its proper divisors (63394796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40512252 is a wasteful number, since it uses less digits than its factorization.

40512252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27930 (or 27917 counting only the distinct ones).

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

The square root of 40512252 is about 6364.9235659197. The cubic root of 40512252 is about 343.4488990002.

Adding to 40512252 its reverse (25221504), we get a palindrome (65733756).

The spelling of 40512252 in words is "forty million, five hundred twelve thousand, two hundred fifty-two".