61565142 has 16 divisors (see below), whose sum is σ = 123464880. Its totient is φ = 20465952.

The previous prime is 61565117. The next prime is 61565201. The reversal of 61565142 is 24156516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11517 + ... + 15992.

It is an arithmetic number, because the mean of its divisors is an integer number (7716555).

Almost surely, 2^61565142 is an apocalyptic number.

61565142 is an abundant number, since it is smaller than the sum of its proper divisors (61899738).

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

61565142 is a wasteful number, since it uses less digits than its factorization.

61565142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27887.

The product of its digits is 7200, while the sum is 30.

The square root of 61565142 is about 7846.3457736707. The cubic root of 61565142 is about 394.8616553387.

It can be divided in two parts, 6156514 and 2, that added together give a palindrome (6156516).

The spelling of 61565142 in words is "sixty-one million, five hundred sixty-five thousand, one hundred forty-two".