61321151 has 12 divisors (see below), whose sum is σ = 67488120. Its totient is φ = 55558800.

The previous prime is 61321129. The next prime is 61321163. The reversal of 61321151 is 15112316.

It is not a de Polignac number, because 61321151 - 2⁶ = 61321087 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 (61321121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7001 + ... + 13101.

It is an arithmetic number, because the mean of its divisors is an integer number (5624010).

Almost surely, 2^61321151 is an apocalyptic number.

61321151 is a deficient number, since it is larger than the sum of its proper divisors (6166969).

61321151 is a wasteful number, since it uses less digits than its factorization.

61321151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166 (or 6143 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 61321151 is about 7830.7822725447. The cubic root of 61321151 is about 394.3393346389.

Adding to 61321151 its reverse (15112316), we get a palindrome (76433467).

The spelling of 61321151 in words is "sixty-one million, three hundred twenty-one thousand, one hundred fifty-one".