61133291 has 2 divisors, whose sum is σ = 61133292. Its totient is φ = 61133290.

The previous prime is 61133269. The next prime is 61133321. The reversal of 61133291 is 19233116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61133291 - 2⁶ = 61133227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61133291.

It is not a weakly prime, because it can be changed into another prime (61133591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30566645 + 30566646.

It is an arithmetic number, because the mean of its divisors is an integer number (30566646).

Almost surely, 2^61133291 is an apocalyptic number.

61133291 is a deficient number, since it is larger than the sum of its proper divisors (1).

61133291 is an equidigital number, since it uses as much as digits as its factorization.

61133291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 61133291 is about 7818.7781014683. The cubic root of 61133291 is about 393.9362308435.

The spelling of 61133291 in words is "sixty-one million, one hundred thirty-three thousand, two hundred ninety-one".