61499741 has 2 divisors, whose sum is σ = 61499742. Its totient is φ = 61499740.

The previous prime is 61499731. The next prime is 61499747. The reversal of 61499741 is 14799416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43943641 + 17556100 = 6629^2 + 4190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61499741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61499747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30749870 + 30749871.

It is an arithmetic number, because the mean of its divisors is an integer number (30749871).

Almost surely, 2^61499741 is an apocalyptic number.

It is an amenable number.

61499741 is a deficient number, since it is larger than the sum of its proper divisors (1).

61499741 is an equidigital number, since it uses as much as digits as its factorization.

61499741 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61499741 is about 7842.1770574248. The cubic root of 61499741 is about 394.7217845388.

The spelling of 61499741 in words is "sixty-one million, four hundred ninety-nine thousand, seven hundred forty-one".