61232251 has 2 divisors, whose sum is σ = 61232252. Its totient is φ = 61232250.

The previous prime is 61232243. The next prime is 61232263. The reversal of 61232251 is 15223216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61232251 - 2³ = 61232243 is a prime.

It is not a weakly prime, because it can be changed into another prime (61232221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30616125 + 30616126.

It is an arithmetic number, because the mean of its divisors is an integer number (30616126).

Almost surely, 2^61232251 is an apocalyptic number.

61232251 is a deficient number, since it is larger than the sum of its proper divisors (1).

61232251 is an equidigital number, since it uses as much as digits as its factorization.

61232251 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 61232251 is about 7825.1038970738. The cubic root of 61232251 is about 394.1486787175.

Adding to 61232251 its reverse (15223216), we get a palindrome (76455467).

The spelling of 61232251 in words is "sixty-one million, two hundred thirty-two thousand, two hundred fifty-one".