61255601 has 16 divisors (see below), whose sum is σ = 73405440. Its totient is φ = 50458320.

The previous prime is 61255559. The next prime is 61255613. The reversal of 61255601 is 10655216.

It is not a de Polignac number, because 61255601 - 2¹⁰ = 61254577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61255501) 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, 1565 + ... + 11178.

It is an arithmetic number, because the mean of its divisors is an integer number (4587840).

Almost surely, 2^61255601 is an apocalyptic number.

It is an amenable number.

61255601 is a deficient number, since it is larger than the sum of its proper divisors (12149839).

61255601 is a wasteful number, since it uses less digits than its factorization.

61255601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 61255601 is about 7826.5957478332. The cubic root of 61255601 is about 394.1987732450.

The spelling of 61255601 in words is "sixty-one million, two hundred fifty-five thousand, six hundred one".