61275260 has 36 divisors (see below), whose sum is σ = 133304808. Its totient is φ = 23658432.

The previous prime is 61275257. The next prime is 61275299. The reversal of 61275260 is 6257216.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14999 + ... + 18641.

Almost surely, 2^61275260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61275260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66652404).

61275260 is an abundant number, since it is smaller than the sum of its proper divisors (72029548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61275260 is a wasteful number, since it uses less digits than its factorization.

61275260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3679 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 61275260 is about 7827.8515571005. The cubic root of 61275260 is about 394.2409393200.

The spelling of 61275260 in words is "sixty-one million, two hundred seventy-five thousand, two hundred sixty".