61227499 has 4 divisors (see below), whose sum is σ = 61369336. Its totient is φ = 61085664.

The previous prime is 61227457. The next prime is 61227601. The reversal of 61227499 is 99472216.

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

It is a cyclic number.

It is not a de Polignac number, because 61227499 - 2¹⁹ = 60703211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61227409) 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, 70269 + ... + 71134.

It is an arithmetic number, because the mean of its divisors is an integer number (15342334).

Almost surely, 2^61227499 is an apocalyptic number.

61227499 is a deficient number, since it is larger than the sum of its proper divisors (141837).

61227499 is a wasteful number, since it uses less digits than its factorization.

61227499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141836.

The product of its digits is 54432, while the sum is 40.

The square root of 61227499 is about 7824.8002530416. The cubic root of 61227499 is about 394.1384823317.

The spelling of 61227499 in words is "sixty-one million, two hundred twenty-seven thousand, four hundred ninety-nine".