61501351 has 2 divisors, whose sum is σ = 61501352. Its totient is φ = 61501350.

The previous prime is 61501343. The next prime is 61501361. The reversal of 61501351 is 15310516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61501351 - 2³ = 61501343 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61501331) 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, 30750675 + 30750676.

It is an arithmetic number, because the mean of its divisors is an integer number (30750676).

Almost surely, 2^61501351 is an apocalyptic number.

61501351 is a deficient number, since it is larger than the sum of its proper divisors (1).

61501351 is an equidigital number, since it uses as much as digits as its factorization.

61501351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 61501351 is about 7842.2797068199. The cubic root of 61501351 is about 394.7252289789.

Adding to 61501351 its reverse (15310516), we get a palindrome (76811867).

The spelling of 61501351 in words is "sixty-one million, five hundred one thousand, three hundred fifty-one".