5951561 has 16 divisors (see below), whose sum is σ = 7624320. Its totient is φ = 4510080.

The previous prime is 5951557. The next prime is 5951591. The reversal of 5951561 is 1651595.

It is a cyclic number.

It is not a de Polignac number, because 5951561 - 2² = 5951557 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5951521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1805 + ... + 3893.

It is an arithmetic number, because the mean of its divisors is an integer number (476520).

Almost surely, 2^5951561 is an apocalyptic number.

It is an amenable number.

5951561 is a deficient number, since it is larger than the sum of its proper divisors (1672759).

5951561 is a wasteful number, since it uses less digits than its factorization.

5951561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its digits is 6750, while the sum is 32.

The square root of 5951561 is about 2439.5821363504. The cubic root of 5951561 is about 181.2217401838.

The spelling of 5951561 in words is "five million, nine hundred fifty-one thousand, five hundred sixty-one".