1553101040 has 40 divisors (see below), whose sum is σ = 3801014160. Its totient is φ = 588542976.

The previous prime is 1553101031. The next prime is 1553101087. The reversal of 1553101040 is 401013551.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 509369 + ... + 512408.

It is an arithmetic number, because the mean of its divisors is an integer number (95025354).

Almost surely, 2^1553101040 is an apocalyptic number.

1553101040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553101040 is an abundant number, since it is smaller than the sum of its proper divisors (2247913120).

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

1553101040 is a wasteful number, since it uses less digits than its factorization.

1553101040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021809 (or 1021803 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1553101040 is about 39409.4029388926. The cubic root of 1553101040 is about 1158.0658016566.

Adding to 1553101040 its reverse (401013551), we get a palindrome (1954114591).

The spelling of 1553101040 in words is "one billion, five hundred fifty-three million, one hundred one thousand, forty".