61215023 has 2 divisors, whose sum is σ = 61215024. Its totient is φ = 61215022.

The previous prime is 61214971. The next prime is 61215031. The reversal of 61215023 is 32051216.

61215023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61215023 - 2¹² = 61210927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61214986 and 61215004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61215043) 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, 30607511 + 30607512.

It is an arithmetic number, because the mean of its divisors is an integer number (30607512).

Almost surely, 2^61215023 is an apocalyptic number.

61215023 is a deficient number, since it is larger than the sum of its proper divisors (1).

61215023 is an equidigital number, since it uses as much as digits as its factorization.

61215023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 61215023 is about 7824.0030035782. The cubic root of 61215023 is about 394.1117100163. Note that the first 3 decimals are identical.

Adding to 61215023 its reverse (32051216), we get a palindrome (93266239).

The spelling of 61215023 in words is "sixty-one million, two hundred fifteen thousand, twenty-three".