61222885 has 4 divisors (see below), whose sum is σ = 73467468. Its totient is φ = 48978304.

The previous prime is 61222879. The next prime is 61222937. The reversal of 61222885 is 58822216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24462916 + 36759969 = 4946^2 + 6063^2 .

It is a cyclic number.

It is not a de Polignac number, because 61222885 - 2³ = 61222877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61222885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6122284 + ... + 6122293.

It is an arithmetic number, because the mean of its divisors is an integer number (18366867).

Almost surely, 2^61222885 is an apocalyptic number.

It is an amenable number.

61222885 is a deficient number, since it is larger than the sum of its proper divisors (12244583).

61222885 is a wasteful number, since it uses less digits than its factorization.

61222885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12244582.

The product of its digits is 15360, while the sum is 34.

The square root of 61222885 is about 7824.5054156796. The cubic root of 61222885 is about 394.1285815481.

The spelling of 61222885 in words is "sixty-one million, two hundred twenty-two thousand, eight hundred eighty-five".