61521214 has 12 divisors (see below), whose sum is σ = 94361904. Its totient is φ = 30068912.

The previous prime is 61521203. The next prime is 61521233. The reversal of 61521214 is 41212516.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75642 + ... + 76450.

It is an arithmetic number, because the mean of its divisors is an integer number (7863492).

Almost surely, 2^61521214 is an apocalyptic number.

61521214 is a deficient number, since it is larger than the sum of its proper divisors (32840690).

61521214 is an frugal number, since it uses more digits than its factorization.

61521214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 858 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 61521214 is about 7843.5460092996. The cubic root of 61521214 is about 394.7677190119.

The spelling of 61521214 in words is "sixty-one million, five hundred twenty-one thousand, two hundred fourteen".