61274189 has 4 divisors (see below), whose sum is σ = 61564800. Its totient is φ = 60983580.

The previous prime is 61274179. The next prime is 61274267. The reversal of 61274189 is 98147216.

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 not a de Polignac number, because 61274189 - 2⁴ = 61274173 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61274149) 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, 144989 + ... + 145410.

It is an arithmetic number, because the mean of its divisors is an integer number (15391200).

Almost surely, 2^61274189 is an apocalyptic number.

It is an amenable number.

61274189 is a deficient number, since it is larger than the sum of its proper divisors (290611).

61274189 is a wasteful number, since it uses less digits than its factorization.

61274189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290610.

The product of its digits is 24192, while the sum is 38.

The square root of 61274189 is about 7827.7831472263. The cubic root of 61274189 is about 394.2386423924.

The spelling of 61274189 in words is "sixty-one million, two hundred seventy-four thousand, one hundred eighty-nine".