61102072 has 32 divisors (see below), whose sum is σ = 119714400. Its totient is φ = 29199744.

The previous prime is 61102061. The next prime is 61102073. The reversal of 61102072 is 27020116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61102073) 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, 22618 + ... + 25174.

It is an arithmetic number, because the mean of its divisors is an integer number (3741075).

Almost surely, 2^61102072 is an apocalyptic number.

It is an amenable number.

61102072 is a deficient number, since it is larger than the sum of its proper divisors (58612328).

61102072 is a wasteful number, since it uses less digits than its factorization.

61102072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 61102072 is about 7816.7814348362. The cubic root of 61102072 is about 393.8691621534.

Adding to 61102072 its reverse (27020116), we get a palindrome (88122188).

The spelling of 61102072 in words is "sixty-one million, one hundred two thousand, seventy-two".