1553051872 has 24 divisors (see below), whose sum is σ = 3059040600. Its totient is φ = 776152704.

The previous prime is 1553051831. The next prime is 1553051873. The reversal of 1553051872 is 2781503551.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553051873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63379 + ... + 84397.

It is an arithmetic number, because the mean of its divisors is an integer number (127460025).

Almost surely, 2^1553051872 is an apocalyptic number.

It is an amenable number.

1553051872 is a deficient number, since it is larger than the sum of its proper divisors (1505988728).

1553051872 is a wasteful number, since it uses less digits than its factorization.

1553051872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23338 (or 23330 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 1553051872 is about 39408.7791234390. The cubic root of 1553051872 is about 1158.0535808633.

The spelling of 1553051872 in words is "one billion, five hundred fifty-three million, fifty-one thousand, eight hundred seventy-two".