1521418252 has 12 divisors (see below), whose sum is σ = 2663475976. Its totient is φ = 760425120.

The previous prime is 1521418229. The next prime is 1521418259. The reversal of 1521418252 is 2528141251.

It is not an unprimeable number, because it can be changed into a prime (1521418259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58713 + ... + 80560.

Almost surely, 2^1521418252 is an apocalyptic number.

It is an amenable number.

1521418252 is a deficient number, since it is larger than the sum of its proper divisors (1142057724).

1521418252 is a wasteful number, since it uses less digits than its factorization.

1521418252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142008 (or 142006 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 1521418252 is about 39005.3618365475. The cubic root of 1521418252 is about 1150.1369092200.

The spelling of 1521418252 in words is "one billion, five hundred twenty-one million, four hundred eighteen thousand, two hundred fifty-two".