1553045020 has 24 divisors (see below), whose sum is σ = 3262999824. Its totient is φ = 620912256.

The previous prime is 1553044943. The next prime is 1553045051. The reversal of 1553045020 is 205403551.

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, 25027 + ... + 61093.

It is an arithmetic number, because the mean of its divisors is an integer number (135958326).

Almost surely, 2^1553045020 is an apocalyptic number.

1553045020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553045020 is an abundant number, since it is smaller than the sum of its proper divisors (1709954804).

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

1553045020 is a wasteful number, since it uses less digits than its factorization.

1553045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38229 (or 38227 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1553045020 is about 39408.6921883992. The cubic root of 1553045020 is about 1158.0518777661.

Adding to 1553045020 its reverse (205403551), we get a palindrome (1758448571).

The spelling of 1553045020 in words is "one billion, five hundred fifty-three million, forty-five thousand, twenty".