61275651 has 4 divisors (see below), whose sum is σ = 81700872. Its totient is φ = 40850432.

The previous prime is 61275647. The next prime is 61275653. The reversal of 61275651 is 15657216.

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 61275651 - 2² = 61275647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61275653) 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, 10212606 + ... + 10212611.

It is an arithmetic number, because the mean of its divisors is an integer number (20425218).

Almost surely, 2^61275651 is an apocalyptic number.

61275651 is a deficient number, since it is larger than the sum of its proper divisors (20425221).

61275651 is a wasteful number, since it uses less digits than its factorization.

61275651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20425220.

The product of its digits is 12600, while the sum is 33.

The square root of 61275651 is about 7827.8765319849. The cubic root of 61275651 is about 394.2417778742.

The spelling of 61275651 in words is "sixty-one million, two hundred seventy-five thousand, six hundred fifty-one".