61261159 has 4 divisors (see below), whose sum is σ = 62916904. Its totient is φ = 59605416.

The previous prime is 61261157. The next prime is 61261169. The reversal of 61261159 is 95116216.

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 61261159 - 2¹ = 61261157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61261159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61261157) 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, 827817 + ... + 827890.

It is an arithmetic number, because the mean of its divisors is an integer number (15729226).

Almost surely, 2^61261159 is an apocalyptic number.

61261159 is a deficient number, since it is larger than the sum of its proper divisors (1655745).

61261159 is a wasteful number, since it uses less digits than its factorization.

61261159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655744.

The product of its digits is 3240, while the sum is 31.

The square root of 61261159 is about 7826.9508111397. The cubic root of 61261159 is about 394.2106953685.

The spelling of 61261159 in words is "sixty-one million, two hundred sixty-one thousand, one hundred fifty-nine".