1545512252 has 12 divisors (see below), whose sum is σ = 2732530080. Its totient is φ = 764789376.

The previous prime is 1545512191. The next prime is 1545512299. The reversal of 1545512252 is 2522155451.

It is a happy number.

It is a super-2 number, since 2×1545512252² = 4777216242164223008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991252 + ... + 1992027.

It is an arithmetic number, because the mean of its divisors is an integer number (227710840).

Almost surely, 2^1545512252 is an apocalyptic number.

It is an amenable number.

1545512252 is a deficient number, since it is larger than the sum of its proper divisors (1187017828).

1545512252 is a wasteful number, since it uses less digits than its factorization.

1545512252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983380 (or 3983378 counting only the distinct ones).

The product of its digits is 20000, while the sum is 32.

The square root of 1545512252 is about 39313.0035993181. The cubic root of 1545512252 is about 1156.1765344236.

The spelling of 1545512252 in words is "one billion, five hundred forty-five million, five hundred twelve thousand, two hundred fifty-two".