61376291 has 2 divisors, whose sum is σ = 61376292. Its totient is φ = 61376290.

The previous prime is 61376281. The next prime is 61376297. The reversal of 61376291 is 19267316.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61376291 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61376297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30688145 + 30688146.

It is an arithmetic number, because the mean of its divisors is an integer number (30688146).

Almost surely, 2^61376291 is an apocalyptic number.

61376291 is a deficient number, since it is larger than the sum of its proper divisors (1).

61376291 is an equidigital number, since it uses as much as digits as its factorization.

61376291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 61376291 is about 7834.3022024939. The cubic root of 61376291 is about 394.4574959173.

The spelling of 61376291 in words is "sixty-one million, three hundred seventy-six thousand, two hundred ninety-one".