61342281 has 72 divisors (see below), whose sum is σ = 120061760. Its totient is φ = 29367360.

The previous prime is 61342277. The next prime is 61342339. The reversal of 61342281 is 18224316.

61342281 is a `hidden beast` number, since 613 + 42 + 2 + 8 + 1 = 666.

It is not a de Polignac number, because 61342281 - 2² = 61342277 is a prime.

It is a super-2 number, since 2×61342281² = 7525750876565922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61342201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 98790 + ... + 99408.

Almost surely, 2^61342281 is an apocalyptic number.

It is an amenable number.

61342281 is a deficient number, since it is larger than the sum of its proper divisors (58719479).

61342281 is a wasteful number, since it uses less digits than its factorization.

61342281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 653 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 61342281 is about 7832.1313191238. The cubic root of 61342281 is about 394.3846231629.

Adding to 61342281 its reverse (18224316), we get a palindrome (79566597).

The spelling of 61342281 in words is "sixty-one million, three hundred forty-two thousand, two hundred eighty-one".