61322275 has 36 divisors (see below), whose sum is σ = 89438472. Its totient is φ = 41583360.

The previous prime is 61322243. The next prime is 61322311. The reversal of 61322275 is 57222316.

61322275 is a nontrivial binomial coefficient, being equal to C(11075, 2).

It is not a de Polignac number, because 61322275 - 2⁵ = 61322243 is a prime.

It is a super-2 number, since 2×61322275² = 7520842822351250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 138204 + ... + 138646.

It is an arithmetic number, because the mean of its divisors is an integer number (2484402).

Almost surely, 2^61322275 is an apocalyptic number.

61322275 is the 11074-th triangular number.

61322275 is the 3692-nd centered nonagonal number.

61322275 is a deficient number, since it is larger than the sum of its proper divisors (28116197).

61322275 is a wasteful number, since it uses less digits than its factorization.

61322275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 568 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 61322275 is about 7830.8540402692. The cubic root of 61322275 is about 394.3417440017.

The spelling of 61322275 in words is "sixty-one million, three hundred twenty-two thousand, two hundred seventy-five".