61288227 has 48 divisors (see below), whose sum is σ = 118879488. Its totient is φ = 29384640.

The previous prime is 61288211. The next prime is 61288237. The reversal of 61288227 is 72288216.

It is a happy number.

It is not a de Polignac number, because 61288227 - 2⁴ = 61288211 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61288191 and 61288200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61288237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5608 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (2476656).

Almost surely, 2^61288227 is an apocalyptic number.

61288227 is a deficient number, since it is larger than the sum of its proper divisors (57591261).

61288227 is a wasteful number, since it uses less digits than its factorization.

61288227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840 (or 6837 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 61288227 is about 7828.6797737550. The cubic root of 61288227 is about 394.2687469632.

The spelling of 61288227 in words is "sixty-one million, two hundred eighty-eight thousand, two hundred twenty-seven".