1553857480 has 64 divisors (see below), whose sum is σ = 4003136640. Its totient is φ = 531750912.

The previous prime is 1553857451. The next prime is 1553857489. The reversal of 1553857480 is 847583551.

It is a self number, because there is not a number n which added to its sum of digits gives 1553857480.

It is not an unprimeable number, because it can be changed into a prime (1553857489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152712 + ... + 162568.

It is an arithmetic number, because the mean of its divisors is an integer number (62549010).

Almost surely, 2^1553857480 is an apocalyptic number.

1553857480 is a gapful number since it is divisible by the number (10) 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 1553857480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2001568320).

1553857480 is an abundant number, since it is smaller than the sum of its proper divisors (2449279160).

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

1553857480 is a wasteful number, since it uses less digits than its factorization.

1553857480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438 (or 10434 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 1553857480 is about 39418.9989725767. The cubic root of 1553857480 is about 1158.2537836553.

The spelling of 1553857480 in words is "one billion, five hundred fifty-three million, eight hundred fifty-seven thousand, four hundred eighty".