61275149 has 8 divisors (see below), whose sum is σ = 66201240. Its totient is φ = 56379456.

The previous prime is 61275143. The next prime is 61275161. The reversal of 61275149 is 94157216.

It can be written as a sum of positive squares in 4 ways, for example, as 2829124 + 58446025 = 1682^2 + 7645^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61275149 - 2²⁴ = 44497933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61275143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3314 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (8275155).

Almost surely, 2^61275149 is an apocalyptic number.

It is an amenable number.

61275149 is a deficient number, since it is larger than the sum of its proper divisors (4926091).

61275149 is a wasteful number, since it uses less digits than its factorization.

61275149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15199.

The product of its digits is 15120, while the sum is 35.

The square root of 61275149 is about 7827.8444670292. The cubic root of 61275149 is about 394.2407012643.

The spelling of 61275149 in words is "sixty-one million, two hundred seventy-five thousand, one hundred forty-nine".