1555120452 has 48 divisors (see below), whose sum is σ = 3669986880. Its totient is φ = 512483712.

The previous prime is 1555120439. The next prime is 1555120583. The reversal of 1555120452 is 2540215551.

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, 868374 + ... + 870162.

It is an arithmetic number, because the mean of its divisors is an integer number (76458060).

Almost surely, 2^1555120452 is an apocalyptic number.

1555120452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555120452 is an abundant number, since it is smaller than the sum of its proper divisors (2114866428).

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

1555120452 is a wasteful number, since it uses less digits than its factorization.

1555120452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2578 counting only the distinct ones).

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

The square root of 1555120452 is about 39435.0155572430. The cubic root of 1555120452 is about 1158.5675073963.

The spelling of 1555120452 in words is "one billion, five hundred fifty-five million, one hundred twenty thousand, four hundred fifty-two".