61455115 has 16 divisors (see below), whose sum is σ = 75154176. Its totient is φ = 48232800.

The previous prime is 61455083. The next prime is 61455137. The reversal of 61455115 is 51155416.

It is a happy number.

It is not a de Polignac number, because 61455115 - 2⁵ = 61455083 is a prime.

It is a Duffinian 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, 117244 + ... + 117766.

It is an arithmetic number, because the mean of its divisors is an integer number (4697136).

Almost surely, 2^61455115 is an apocalyptic number.

61455115 is a deficient number, since it is larger than the sum of its proper divisors (13699061).

61455115 is a wasteful number, since it uses less digits than its factorization.

61455115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930.

The product of its digits is 3000, while the sum is 28.

The square root of 61455115 is about 7839.3312852564. The cubic root of 61455115 is about 394.6262875692.

The spelling of 61455115 in words is "sixty-one million, four hundred fifty-five thousand, one hundred fifteen".