1551582480 has 80 divisors (see below), whose sum is σ = 5497041024. Its totient is φ = 354647040.

The previous prime is 1551582437. The next prime is 1551582491. The reversal of 1551582480 is 842851551.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460101 + ... + 463460.

Almost surely, 2^1551582480 is an apocalyptic number.

1551582480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551582480 is an abundant number, since it is smaller than the sum of its proper divisors (3945458544).

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

1551582480 is a wasteful number, since it uses less digits than its factorization.

1551582480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923584 (or 923578 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 39.

The square root of 1551582480 is about 39390.1317591094. The cubic root of 1551582480 is about 1157.6882417875.

The spelling of 1551582480 in words is "one billion, five hundred fifty-one million, five hundred eighty-two thousand, four hundred eighty".