61221514 has 4 divisors (see below), whose sum is σ = 91832274. Its totient is φ = 30610756.

The previous prime is 61221473. The next prime is 61221521. The reversal of 61221514 is 41512216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38229489 + 22992025 = 6183^2 + 4795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15305377 + ... + 15305380.

Almost surely, 2^61221514 is an apocalyptic number.

61221514 is a deficient number, since it is larger than the sum of its proper divisors (30610760).

61221514 is a wasteful number, since it uses less digits than its factorization.

61221514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610759.

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

The square root of 61221514 is about 7824.4178058179. The cubic root of 61221514 is about 394.1256395419.

The spelling of 61221514 in words is "sixty-one million, two hundred twenty-one thousand, five hundred fourteen".