61005222 has 24 divisors (see below), whose sum is σ = 133854240. Its totient is φ = 20077200.

The previous prime is 61005211. The next prime is 61005247. The reversal of 61005222 is 22250016.

61005222 is a `hidden beast` number, since 610 + 0 + 52 + 2 + 2 = 666.

It is a super-2 number, since 2×61005222² = 7443274222538568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 61005195 and 61005204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20029 + ... + 22872.

It is an arithmetic number, because the mean of its divisors is an integer number (5577260).

Almost surely, 2^61005222 is an apocalyptic number.

61005222 is an abundant number, since it is smaller than the sum of its proper divisors (72849018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61005222 is a wasteful number, since it uses less digits than its factorization.

61005222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42988 (or 42985 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 61005222 is about 7810.5839730458. The cubic root of 61005222 is about 393.6609509888.

Adding to 61005222 its reverse (22250016), we get a palindrome (83255238).

The spelling of 61005222 in words is "sixty-one million, five thousand, two hundred twenty-two".