61241155 has 4 divisors (see below), whose sum is σ = 73489392. Its totient is φ = 48992920.

The previous prime is 61241153. The next prime is 61241171. The reversal of 61241155 is 55114216.

It is a happy number.

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

It is not a de Polignac number, because 61241155 - 2¹ = 61241153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61241153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6124111 + ... + 6124120.

It is an arithmetic number, because the mean of its divisors is an integer number (18372348).

Almost surely, 2^61241155 is an apocalyptic number.

61241155 is a deficient number, since it is larger than the sum of its proper divisors (12248237).

61241155 is a wasteful number, since it uses less digits than its factorization.

61241155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12248236.

The product of its digits is 1200, while the sum is 25.

The square root of 61241155 is about 7825.6728145253. The cubic root of 61241155 is about 394.1677826466.

The spelling of 61241155 in words is "sixty-one million, two hundred forty-one thousand, one hundred fifty-five".