61373221 has 8 divisors (see below), whose sum is σ = 75536384. Its totient is φ = 48558960.

The previous prime is 61373219. The next prime is 61373233. The reversal of 61373221 is 12237316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61373221 - 2¹ = 61373219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61373261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337125 + ... + 337306.

It is an arithmetic number, because the mean of its divisors is an integer number (9442048).

Almost surely, 2^61373221 is an apocalyptic number.

It is an amenable number.

61373221 is a deficient number, since it is larger than the sum of its proper divisors (14163163).

61373221 is a wasteful number, since it uses less digits than its factorization.

61373221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674451.

The product of its digits is 1512, while the sum is 25.

The square root of 61373221 is about 7834.1062668310. The cubic root of 61373221 is about 394.4509189765.

The spelling of 61373221 in words is "sixty-one million, three hundred seventy-three thousand, two hundred twenty-one".