61241565 has 64 divisors (see below), whose sum is σ = 129392640. Its totient is φ = 23946240.

The previous prime is 61241561. The next prime is 61241581. The reversal of 61241565 is 56514216.

It is not a de Polignac number, because 61241565 - 2² = 61241561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61241561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18076 + ... + 21194.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 2^61241565 is an apocalyptic number.

It is an amenable number.

61241565 is an abundant number, since it is smaller than the sum of its proper divisors (68151075).

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

61241565 is a wasteful number, since it uses less digits than its factorization.

61241565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162.

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

The square root of 61241565 is about 7825.6990103121. The cubic root of 61241565 is about 394.1686622753.

The spelling of 61241565 in words is "sixty-one million, two hundred forty-one thousand, five hundred sixty-five".