61255605 has 32 divisors (see below), whose sum is σ = 100465920. Its totient is φ = 31861760.

The previous prime is 61255559. The next prime is 61255613. The reversal of 61255605 is 50655216.

It is not a de Polignac number, because 61255605 - 2⁷ = 61255477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120091 + ... + 120599.

It is an arithmetic number, because the mean of its divisors is an integer number (3139560).

Almost surely, 2^61255605 is an apocalyptic number.

It is an amenable number.

61255605 is a deficient number, since it is larger than the sum of its proper divisors (39210315).

61255605 is a wasteful number, since it uses less digits than its factorization.

61255605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 61255605 is about 7826.5960033721. The cubic root of 61255605 is about 394.1987818254.

The spelling of 61255605 in words is "sixty-one million, two hundred fifty-five thousand, six hundred five".