61217258 has 16 divisors (see below), whose sum is σ = 93598080. Its totient is φ = 30023136.

The previous prime is 61217239. The next prime is 61217263. The reversal of 61217258 is 85271216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24566 + ... + 26942.

It is an arithmetic number, because the mean of its divisors is an integer number (5849880).

Almost surely, 2^61217258 is an apocalyptic number.

61217258 is a deficient number, since it is larger than the sum of its proper divisors (32380822).

61217258 is a wasteful number, since it uses less digits than its factorization.

61217258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621.

The product of its digits is 6720, while the sum is 32.

The square root of 61217258 is about 7824.1458319742. The cubic root of 61217258 is about 394.1165063822.

The spelling of 61217258 in words is "sixty-one million, two hundred seventeen thousand, two hundred fifty-eight".