61232513 has 2 divisors, whose sum is σ = 61232514. Its totient is φ = 61232512.

The previous prime is 61232491. The next prime is 61232519. The reversal of 61232513 is 31523216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56445169 + 4787344 = 7513^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 61232513 - 2¹⁶ = 61166977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61232519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30616256 + 30616257.

It is an arithmetic number, because the mean of its divisors is an integer number (30616257).

Almost surely, 2^61232513 is an apocalyptic number.

It is an amenable number.

61232513 is a deficient number, since it is larger than the sum of its proper divisors (1).

61232513 is an equidigital number, since it uses as much as digits as its factorization.

61232513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 61232513 is about 7825.1206380477. The cubic root of 61232513 is about 394.1492408766.

Adding to 61232513 its reverse (31523216), we get a palindrome (92755729).

The spelling of 61232513 in words is "sixty-one million, two hundred thirty-two thousand, five hundred thirteen".