61412549 has 4 divisors (see below), whose sum is σ = 66995520. Its totient is φ = 55829580.

The previous prime is 61412537. The next prime is 61412609. The reversal of 61412549 is 94521416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61412549 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61412249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791469 + ... + 2791490.

It is an arithmetic number, because the mean of its divisors is an integer number (16748880).

Almost surely, 2^61412549 is an apocalyptic number.

It is an amenable number.

61412549 is a deficient number, since it is larger than the sum of its proper divisors (5582971).

61412549 is a wasteful number, since it uses less digits than its factorization.

61412549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5582970.

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

The square root of 61412549 is about 7836.6159150490. The cubic root of 61412549 is about 394.5351557880.

The spelling of 61412549 in words is "sixty-one million, four hundred twelve thousand, five hundred forty-nine".