61361147 has 4 divisors (see below), whose sum is σ = 61904280. Its totient is φ = 60818016.

The previous prime is 61361141. The next prime is 61361149. The reversal of 61361147 is 74116316.

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

It is a cyclic number.

It is not a de Polignac number, because 61361147 - 2⁸ = 61360891 is a prime.

It is a super-2 number, since 2×61361147² = 7530380722311218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61361141) 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, 271397 + ... + 271622.

It is an arithmetic number, because the mean of its divisors is an integer number (15476070).

Almost surely, 2^61361147 is an apocalyptic number.

61361147 is a deficient number, since it is larger than the sum of its proper divisors (543133).

61361147 is a wasteful number, since it uses less digits than its factorization.

61361147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543132.

The product of its digits is 3024, while the sum is 29.

The square root of 61361147 is about 7833.3356241131. The cubic root of 61361147 is about 394.4250504046.

The spelling of 61361147 in words is "sixty-one million, three hundred sixty-one thousand, one hundred forty-seven".