61255870 has 32 divisors (see below), whose sum is σ = 119331072. Its totient is φ = 22505472.

The previous prime is 61255849. The next prime is 61255891. The reversal of 61255870 is 7855216.

It is an interprime number because it is at equal distance from previous prime (61255849) and next prime (61255891).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27934 + ... + 30046.

It is an arithmetic number, because the mean of its divisors is an integer number (3729096).

Almost surely, 2^61255870 is an apocalyptic number.

61255870 is a deficient number, since it is larger than the sum of its proper divisors (58075202).

61255870 is a wasteful number, since it uses less digits than its factorization.

61255870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 61255870 is about 7826.6129328082. The cubic root of 61255870 is about 394.1993502769.

The spelling of 61255870 in words is "sixty-one million, two hundred fifty-five thousand, eight hundred seventy".