61166255 has 32 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 43983360.

The previous prime is 61166213. The next prime is 61166297. The reversal of 61166255 is 55266116.

It is an interprime number because it is at equal distance from previous prime (61166213) and next prime (61166297).

It is not a de Polignac number, because 61166255 - 2⁸ = 61165999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366182 + ... + 366348.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^61166255 is an apocalyptic number.

61166255 is a deficient number, since it is larger than the sum of its proper divisors (20118865).

61166255 is a wasteful number, since it uses less digits than its factorization.

61166255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its digits is 10800, while the sum is 32.

The square root of 61166255 is about 7820.8858193941. The cubic root of 61166255 is about 394.0070235892.

It can be divided in two parts, 611 and 66255, that added together give a palindrome (66866).

The spelling of 61166255 in words is "sixty-one million, one hundred sixty-six thousand, two hundred fifty-five".