1013555050 has 12 divisors (see below), whose sum is σ = 1885212486. Its totient is φ = 405422000.

The previous prime is 1013555009. The next prime is 1013555083. The reversal of 1013555050 is 505553101.

It can be written as a sum of positive squares in 3 ways, for example, as 985771609 + 27783441 = 31397^2 + 5271^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10135501 + ... + 10135600.

Almost surely, 2^1013555050 is an apocalyptic number.

1013555050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1013555050 is a deficient number, since it is larger than the sum of its proper divisors (871657436).

1013555050 is a wasteful number, since it uses less digits than its factorization.

1013555050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20271113 (or 20271108 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 1013555050 is about 31836.3793481608. The cubic root of 1013555050 is about 1004.4980868782.

The spelling of 1013555050 in words is "one billion, thirteen million, five hundred fifty-five thousand, fifty".