2956251561 has 8 divisors (see below), whose sum is σ = 4077588480. Its totient is φ = 1902874512.

The previous prime is 2956251539. The next prime is 2956251569. The reversal of 2956251561 is 1651526592.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2956251561 - 2⁶ = 2956251497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2956251569) 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, 16989865 + ... + 16990038.

It is an arithmetic number, because the mean of its divisors is an integer number (509698560).

Almost surely, 2^2956251561 is an apocalyptic number.

It is an amenable number.

2956251561 is a deficient number, since it is larger than the sum of its proper divisors (1121336919).

2956251561 is a wasteful number, since it uses less digits than its factorization.

2956251561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33979935.

The product of its digits is 162000, while the sum is 42.

The square root of 2956251561 is about 54371.4222822983. The cubic root of 2956251561 is about 1435.2045277400.

The spelling of 2956251561 in words is "two billion, nine hundred fifty-six million, two hundred fifty-one thousand, five hundred sixty-one".