61652571 has 4 divisors (see below), whose sum is σ = 82203432. Its totient is φ = 41101712.

The previous prime is 61652567. The next prime is 61652573. The reversal of 61652571 is 17525616.

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

It is a cyclic number.

It is not a de Polignac number, because 61652571 - 2² = 61652567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61652573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10275426 + ... + 10275431.

It is an arithmetic number, because the mean of its divisors is an integer number (20550858).

Almost surely, 2^61652571 is an apocalyptic number.

61652571 is a deficient number, since it is larger than the sum of its proper divisors (20550861).

61652571 is a wasteful number, since it uses less digits than its factorization.

61652571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550860.

The product of its digits is 12600, while the sum is 33.

The square root of 61652571 is about 7851.9151167088. The cubic root of 61652571 is about 395.0484820051.

The spelling of 61652571 in words is "sixty-one million, six hundred fifty-two thousand, five hundred seventy-one".