1561055514 has 16 divisors (see below), whose sum is σ = 3173293920. Its totient is φ = 511821360.

The previous prime is 1561055479. The next prime is 1561055519. The reversal of 1561055514 is 4155501651.

It is not an unprimeable number, because it can be changed into a prime (1561055519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2132224 + ... + 2132955.

It is an arithmetic number, because the mean of its divisors is an integer number (198330870).

Almost surely, 2^1561055514 is an apocalyptic number.

1561055514 is an abundant number, since it is smaller than the sum of its proper divisors (1612238406).

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

1561055514 is a wasteful number, since it uses less digits than its factorization.

1561055514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265245.

The product of its (nonzero) digits is 15000, while the sum is 33.

The square root of 1561055514 is about 39510.1950640591. The cubic root of 1561055514 is about 1160.0395136164.

The spelling of 1561055514 in words is "one billion, five hundred sixty-one million, fifty-five thousand, five hundred fourteen".