1520551452 has 24 divisors (see below), whose sum is σ = 4054804096. Its totient is φ = 434443248.

The previous prime is 1520551447. The next prime is 1520551471. The reversal of 1520551452 is 2541550251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9050818 + ... + 9050985.

Almost surely, 2^1520551452 is an apocalyptic number.

1520551452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1520551452 is an abundant number, since it is smaller than the sum of its proper divisors (2534252644).

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

1520551452 is a wasteful number, since it uses less digits than its factorization.

1520551452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18101817 (or 18101815 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1520551452 is about 38994.2489605839. The cubic root of 1520551452 is about 1149.9184446260.

The spelling of 1520551452 in words is "one billion, five hundred twenty million, five hundred fifty-one thousand, four hundred fifty-two".