1553480 has 32 divisors (see below), whose sum is σ = 3551040. Its totient is φ = 611520.

The previous prime is 1553479. The next prime is 1553507. The reversal of 1553480 is 843551.

It is a super-2 number, since 2×1553480² = 4826600220800, which contains 22 as substring.

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, 2567 + ... + 3113.

It is an arithmetic number, because the mean of its divisors is an integer number (110970).

2^1553480 is an apocalyptic number.

1553480 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 1553480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775520).

1553480 is an abundant number, since it is smaller than the sum of its proper divisors (1997560).

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

1553480 is a wasteful number, since it uses less digits than its factorization.

1553480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1553480 is about 1246.3867778503. The cubic root of 1553480 is about 115.8159984180.

The spelling of 1553480 in words is "one million, five hundred fifty-three thousand, four hundred eighty".