61949471 has 2 divisors, whose sum is σ = 61949472. Its totient is φ = 61949470.

The previous prime is 61949467. The next prime is 61949477. The reversal of 61949471 is 17494916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61949471 - 2² = 61949467 is a prime.

It is a super-3 number, since 3×61949471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61949477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30974735 + 30974736.

It is an arithmetic number, because the mean of its divisors is an integer number (30974736).

Almost surely, 2^61949471 is an apocalyptic number.

61949471 is a deficient number, since it is larger than the sum of its proper divisors (1).

61949471 is an equidigital number, since it uses as much as digits as its factorization.

61949471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 61949471 is about 7870.7986252985. The cubic root of 61949471 is about 395.6816111515.

The spelling of 61949471 in words is "sixty-one million, nine hundred forty-nine thousand, four hundred seventy-one".