1553861296 has 160 divisors (see below), whose sum is σ = 3526024320. Its totient is φ = 658022400.

The previous prime is 1553861293. The next prime is 1553861303. The reversal of 1553861296 is 6921683551.

It is not an unprimeable number, because it can be changed into a prime (1553861291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15085981 + ... + 15086083.

It is an arithmetic number, because the mean of its divisors is an integer number (22037652).

Almost surely, 2^1553861296 is an apocalyptic number.

1553861296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553861296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763012160).

1553861296 is an abundant number, since it is smaller than the sum of its proper divisors (1972163024).

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

1553861296 is a wasteful number, since it uses less digits than its factorization.

1553861296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The square root of 1553861296 is about 39419.0473756026. The cubic root of 1553861296 is about 1158.2547318102.

The spelling of 1553861296 in words is "one billion, five hundred fifty-three million, eight hundred sixty-one thousand, two hundred ninety-six".