61252231 has 2 divisors, whose sum is σ = 61252232. Its totient is φ = 61252230.

The previous prime is 61252229. The next prime is 61252267. The reversal of 61252231 is 13225216.

61252231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61252231 - 2¹ = 61252229 is a prime.

It is a super-2 number, since 2×61252231² = 7503671604954722, which contains 22 as substring.

Together with 61252229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61252211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30626115 + 30626116.

It is an arithmetic number, because the mean of its divisors is an integer number (30626116).

Almost surely, 2^61252231 is an apocalyptic number.

61252231 is a deficient number, since it is larger than the sum of its proper divisors (1).

61252231 is an equidigital number, since it uses as much as digits as its factorization.

61252231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 61252231 is about 7826.3804533130. The cubic root of 61252231 is about 394.1915441143.

Adding to 61252231 its reverse (13225216), we get a palindrome (74477447).

The spelling of 61252231 in words is "sixty-one million, two hundred fifty-two thousand, two hundred thirty-one".