61226881 has 4 divisors (see below), whose sum is σ = 61424064. Its totient is φ = 61029700.

The previous prime is 61226849. The next prime is 61226887. The reversal of 61226881 is 18862216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61226881 - 2⁵ = 61226849 is a prime.

It is a super-2 number, since 2×61226881² = 7497461913976322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61226887) 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, 98125 + ... + 98746.

It is an arithmetic number, because the mean of its divisors is an integer number (15356016).

Almost surely, 2^61226881 is an apocalyptic number.

It is an amenable number.

61226881 is a deficient number, since it is larger than the sum of its proper divisors (197183).

61226881 is a wasteful number, since it uses less digits than its factorization.

61226881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197182.

The product of its digits is 9216, while the sum is 34.

The square root of 61226881 is about 7824.7607631160. The cubic root of 61226881 is about 394.1371562478.

The spelling of 61226881 in words is "sixty-one million, two hundred twenty-six thousand, eight hundred eighty-one".