1060061561 has 4 divisors (see below), whose sum is σ = 1141604772. Its totient is φ = 978518352.

The previous prime is 1060061557. The next prime is 1060061567. The reversal of 1060061561 is 1651600601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127125625 + 932935936 = 11275^2 + 30544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1060061561 - 2² = 1060061557 is a prime.

It is a super-2 number, since 2×1060061561² = 2247461026219513442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1060061561.

It is not an unprimeable number, because it can be changed into a prime (1060061567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40771586 + ... + 40771611.

It is an arithmetic number, because the mean of its divisors is an integer number (285401193).

Almost surely, 2^1060061561 is an apocalyptic number.

It is an amenable number.

1060061561 is a deficient number, since it is larger than the sum of its proper divisors (81543211).

1060061561 is an equidigital number, since it uses as much as digits as its factorization.

1060061561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81543210.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1060061561 is about 32558.5865940154. The cubic root of 1060061561 is about 1019.6325605260.

The spelling of 1060061561 in words is "one billion, sixty million, sixty-one thousand, five hundred sixty-one".