1521210472 has 16 divisors (see below), whose sum is σ = 2861445600. Its totient is φ = 758158320.

The previous prime is 1521210461. The next prime is 1521210479. The reversal of 1521210472 is 2740121251.

It is not an unprimeable number, because it can be changed into a prime (1521210479) 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, 303222 + ... + 308197.

It is an arithmetic number, because the mean of its divisors is an integer number (178840350).

Almost surely, 2^1521210472 is an apocalyptic number.

It is an amenable number.

1521210472 is a deficient number, since it is larger than the sum of its proper divisors (1340235128).

1521210472 is a wasteful number, since it uses less digits than its factorization.

1521210472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611736 (or 611732 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1521210472 is about 39002.6982656329. The cubic root of 1521210472 is about 1150.0845487932.

The spelling of 1521210472 in words is "one billion, five hundred twenty-one million, two hundred ten thousand, four hundred seventy-two".