61151005 has 8 divisors (see below), whose sum is σ = 74386872. Its totient is φ = 48250368.

The previous prime is 61150961. The next prime is 61151011. The reversal of 61151005 is 50015116.

It can be written as a sum of positive squares in 4 ways, for example, as 25938649 + 35212356 = 5093^2 + 5934^2 .

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 61151005 - 2⁷ = 61150877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83404 + ... + 84133.

It is an arithmetic number, because the mean of its divisors is an integer number (9298359).

Almost surely, 2^61151005 is an apocalyptic number.

It is an amenable number.

61151005 is a deficient number, since it is larger than the sum of its proper divisors (13235867).

61151005 is a wasteful number, since it uses less digits than its factorization.

61151005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167615.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 61151005 is about 7819.9108051179. The cubic root of 61151005 is about 393.9742761942.

The spelling of 61151005 in words is "sixty-one million, one hundred fifty-one thousand, five".