1553031040 has 128 divisors (see below), whose sum is σ = 4119984000. Its totient is φ = 555018240.

The previous prime is 1553031017. The next prime is 1553031061. The reversal of 1553031040 is 401303551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1553031040² = 4823810822406963200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 413491 + ... + 417229.

It is an arithmetic number, because the mean of its divisors is an integer number (32187375).

Almost surely, 2^1553031040 is an apocalyptic number.

1553031040 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 1553031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059992000).

1553031040 is an abundant number, since it is smaller than the sum of its proper divisors (2566952960).

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

1553031040 is a wasteful number, since it uses less digits than its factorization.

1553031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3816 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1553031040 is about 39408.5148159633. The cubic root of 1553031040 is about 1158.0484029551.

Adding to 1553031040 its reverse (401303551), we get a palindrome (1954334591).

The spelling of 1553031040 in words is "one billion, five hundred fifty-three million, thirty-one thousand, forty".