61311151 has 8 divisors (see below), whose sum is σ = 66991824. Its totient is φ = 55648320.

The previous prime is 61311143. The next prime is 61311193. The reversal of 61311151 is 15111316.

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 61311151 - 2³ = 61311143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61311251) 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, 3331 + ... + 11563.

It is an arithmetic number, because the mean of its divisors is an integer number (8373978).

Almost surely, 2^61311151 is an apocalyptic number.

61311151 is a deficient number, since it is larger than the sum of its proper divisors (5680673).

61311151 is a wasteful number, since it uses less digits than its factorization.

61311151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921.

The product of its digits is 90, while the sum is 19.

The square root of 61311151 is about 7830.1437406985. The cubic root of 61311151 is about 394.3178977303.

Adding to 61311151 its reverse (15111316), we get a palindrome (76422467).

The spelling of 61311151 in words is "sixty-one million, three hundred eleven thousand, one hundred fifty-one".