61237217 has 4 divisors (see below), whose sum is σ = 61265556. Its totient is φ = 61208880.

The previous prime is 61237177. The next prime is 61237261. The reversal of 61237217 is 71273216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21307456 + 39929761 = 4616^2 + 6319^2 .

It is a cyclic number.

It is not a de Polignac number, because 61237217 - 2¹² = 61233121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61237217.

It is not an unprimeable number, because it can be changed into a prime (61297217) 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, 10634 + ... + 15347.

It is an arithmetic number, because the mean of its divisors is an integer number (15316389).

Almost surely, 2^61237217 is an apocalyptic number.

It is an amenable number.

61237217 is a deficient number, since it is larger than the sum of its proper divisors (28339).

61237217 is a wasteful number, since it uses less digits than its factorization.

61237217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338.

The product of its digits is 3528, while the sum is 29.

The square root of 61237217 is about 7825.4212027213. The cubic root of 61237217 is about 394.1593337204.

The spelling of 61237217 in words is "sixty-one million, two hundred thirty-seven thousand, two hundred seventeen".