61252643 has 2 divisors, whose sum is σ = 61252644. Its totient is φ = 61252642.

The previous prime is 61252579. The next prime is 61252651. The reversal of 61252643 is 34625216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61252643 - 2⁶ = 61252579 is a prime.

It is not a weakly prime, because it can be changed into another prime (61252663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30626321 + 30626322.

It is an arithmetic number, because the mean of its divisors is an integer number (30626322).

Almost surely, 2^61252643 is an apocalyptic number.

61252643 is a deficient number, since it is larger than the sum of its proper divisors (1).

61252643 is an equidigital number, since it uses as much as digits as its factorization.

61252643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 61252643 is about 7826.4067745039. The cubic root of 61252643 is about 394.1924279273.

Adding to 61252643 its reverse (34625216), we get a palindrome (95877859).

The spelling of 61252643 in words is "sixty-one million, two hundred fifty-two thousand, six hundred forty-three".