61315151 has 2 divisors, whose sum is σ = 61315152. Its totient is φ = 61315150.

The previous prime is 61315129. The next prime is 61315157. The reversal of 61315151 is 15151316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61315151 - 2¹⁸ = 61053007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61315157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30657575 + 30657576.

It is an arithmetic number, because the mean of its divisors is an integer number (30657576).

Almost surely, 2^61315151 is an apocalyptic number.

61315151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61315151 is an equidigital number, since it uses as much as digits as its factorization.

61315151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 23.

The square root of 61315151 is about 7830.3991596853. The cubic root of 61315151 is about 394.3264727734.

Adding to 61315151 its reverse (15151316), we get a palindrome (76466467).

The spelling of 61315151 in words is "sixty-one million, three hundred fifteen thousand, one hundred fifty-one".