61255255 has 4 divisors (see below), whose sum is σ = 73506312. Its totient is φ = 49004200.

The previous prime is 61255247. The next prime is 61255273. The reversal of 61255255 is 55255216.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61255255 - 2³ = 61255247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6125521 + ... + 6125530.

It is an arithmetic number, because the mean of its divisors is an integer number (18376578).

Almost surely, 2^61255255 is an apocalyptic number.

61255255 is a deficient number, since it is larger than the sum of its proper divisors (12251057).

61255255 is a wasteful number, since it uses less digits than its factorization.

61255255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12251056.

The product of its digits is 15000, while the sum is 31.

The square root of 61255255 is about 7826.5736436834. The cubic root of 61255255 is about 394.1980310379.

The spelling of 61255255 in words is "sixty-one million, two hundred fifty-five thousand, two hundred fifty-five".