61124549 has 2 divisors, whose sum is σ = 61124550. Its totient is φ = 61124548.

The previous prime is 61124519. The next prime is 61124551. The reversal of 61124549 is 94542116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54493924 + 6630625 = 7382^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 61124549 - 2²⁰ = 60075973 is a prime.

Together with 61124551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61124509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30562274 + 30562275.

It is an arithmetic number, because the mean of its divisors is an integer number (30562275).

Almost surely, 2^61124549 is an apocalyptic number.

It is an amenable number.

61124549 is a deficient number, since it is larger than the sum of its proper divisors (1).

61124549 is an equidigital number, since it uses as much as digits as its factorization.

61124549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 61124549 is about 7818.2190427232. The cubic root of 61124549 is about 393.9174524515.

The spelling of 61124549 in words is "sixty-one million, one hundred twenty-four thousand, five hundred forty-nine".