1553513140 has 12 divisors (see below), whose sum is σ = 3262377636. Its totient is φ = 621405248.

The previous prime is 1553513119. The next prime is 1553513141. The reversal of 1553513140 is 413153551.

It can be written as a sum of positive squares in 2 ways, for example, as 975687696 + 577825444 = 31236^2 + 24038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1553513099 and 1553513108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553513141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38837809 + ... + 38837848.

It is an arithmetic number, because the mean of its divisors is an integer number (271864803).

Almost surely, 2^1553513140 is an apocalyptic number.

1553513140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553513140 is an abundant number, since it is smaller than the sum of its proper divisors (1708864496).

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

1553513140 is a wasteful number, since it uses less digits than its factorization.

1553513140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77675666 (or 77675664 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1553513140 is about 39414.6310397548. The cubic root of 1553513140 is about 1158.1682197008.

Adding to 1553513140 its reverse (413153551), we get a palindrome (1966666691).

The spelling of 1553513140 in words is "one billion, five hundred fifty-three million, five hundred thirteen thousand, one hundred forty".