61500265 has 4 divisors (see below), whose sum is σ = 73800324. Its totient is φ = 49200208.

The previous prime is 61500251. The next prime is 61500269. The reversal of 61500265 is 56200516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29192409 + 32307856 = 5403^2 + 5684^2 .

It is a cyclic number.

It is not a de Polignac number, because 61500265 - 2²³ = 53111657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61500269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6150022 + ... + 6150031.

It is an arithmetic number, because the mean of its divisors is an integer number (18450081).

Almost surely, 2^61500265 is an apocalyptic number.

It is an amenable number.

61500265 is a deficient number, since it is larger than the sum of its proper divisors (12300059).

61500265 is a wasteful number, since it uses less digits than its factorization.

61500265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300058.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 61500265 is about 7842.2104664438. The cubic root of 61500265 is about 394.7229055930.

The spelling of 61500265 in words is "sixty-one million, five hundred thousand, two hundred sixty-five".