61442211 has 8 divisors (see below), whose sum is σ = 83468880. Its totient is φ = 40188512.

The previous prime is 61442209. The next prime is 61442243. The reversal of 61442211 is 11224416.

It is a happy number.

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 61442211 - 2¹ = 61442209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61442261) 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, 193056 + ... + 193373.

It is an arithmetic number, because the mean of its divisors is an integer number (10433610).

Almost surely, 2^61442211 is an apocalyptic number.

61442211 is a deficient number, since it is larger than the sum of its proper divisors (22026669).

61442211 is a wasteful number, since it uses less digits than its factorization.

61442211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386485.

The product of its digits is 384, while the sum is 21.

The square root of 61442211 is about 7838.5082126639. The cubic root of 61442211 is about 394.5986651650.

Adding to 61442211 its reverse (11224416), we get a palindrome (72666627).

The spelling of 61442211 in words is "sixty-one million, four hundred forty-two thousand, two hundred eleven".