1553551142 has 32 divisors (see below), whose sum is σ = 2776322304. Its totient is φ = 642650400.

The previous prime is 1553551121. The next prime is 1553551157. The reversal of 1553551142 is 2411553551.

It is a junction number, because it is equal to n+sod(n) for n = 1553551099 and 1553551108.

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, 17948 + ... + 58559.

It is an arithmetic number, because the mean of its divisors is an integer number (86760072).

Almost surely, 2^1553551142 is an apocalyptic number.

1553551142 is a deficient number, since it is larger than the sum of its proper divisors (1222771162).

1553551142 is a wasteful number, since it uses less digits than its factorization.

1553551142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76604.

The product of its digits is 15000, while the sum is 32.

The square root of 1553551142 is about 39415.1131166714. The cubic root of 1553551142 is about 1158.1776633179.

The spelling of 1553551142 in words is "one billion, five hundred fifty-three million, five hundred fifty-one thousand, one hundred forty-two".