1553545956 has 24 divisors (see below), whose sum is σ = 3625957440. Its totient is φ = 517703392.

The previous prime is 1553545949. The next prime is 1553545999. The reversal of 1553545956 is 6595453551.

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, 31930 + ... + 64238.

It is an arithmetic number, because the mean of its divisors is an integer number (151081560).

Almost surely, 2^1553545956 is an apocalyptic number.

It is an amenable number.

1553545956 is an abundant number, since it is smaller than the sum of its proper divisors (2072411484).

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

1553545956 is a wasteful number, since it uses less digits than its factorization.

1553545956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36323 (or 36321 counting only the distinct ones).

The product of its digits is 2025000, while the sum is 48.

The square root of 1553545956 is about 39415.0473296684. The cubic root of 1553545956 is about 1158.1763745896.

The spelling of 1553545956 in words is "one billion, five hundred fifty-three million, five hundred forty-five thousand, nine hundred fifty-six".