61549373 has 2 divisors, whose sum is σ = 61549374. Its totient is φ = 61549372.

The previous prime is 61549363. The next prime is 61549393. The reversal of 61549373 is 37394516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58171129 + 3378244 = 7627^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 61549373 - 2⁶ = 61549309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61549363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30774686 + 30774687.

It is an arithmetic number, because the mean of its divisors is an integer number (30774687).

Almost surely, 2^61549373 is an apocalyptic number.

It is an amenable number.

61549373 is a deficient number, since it is larger than the sum of its proper divisors (1).

61549373 is an equidigital number, since it uses as much as digits as its factorization.

61549373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 61549373 is about 7845.3408466427. The cubic root of 61549373 is about 394.8279398035.

The spelling of 61549373 in words is "sixty-one million, five hundred forty-nine thousand, three hundred seventy-three".