61501417 has 2 divisors, whose sum is σ = 61501418. Its totient is φ = 61501416.

The previous prime is 61501411. The next prime is 61501457. The reversal of 61501417 is 71410516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51897616 + 9603801 = 7204^2 + 3099^2 .

It is a cyclic number.

It is not a de Polignac number, because 61501417 - 2³ = 61501409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61501391 and 61501400.

It is not a weakly prime, because it can be changed into another prime (61501411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30750708 + 30750709.

It is an arithmetic number, because the mean of its divisors is an integer number (30750709).

Almost surely, 2^61501417 is an apocalyptic number.

It is an amenable number.

61501417 is a deficient number, since it is larger than the sum of its proper divisors (1).

61501417 is an equidigital number, since it uses as much as digits as its factorization.

61501417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 61501417 is about 7842.2839147789. The cubic root of 61501417 is about 394.7253701783.

Subtracting 61501417 from its reverse (71410516), we obtain a palindrome (9909099).

The spelling of 61501417 in words is "sixty-one million, five hundred one thousand, four hundred seventeen".