60561421 has 2 divisors, whose sum is σ = 60561422. Its totient is φ = 60561420.

The previous prime is 60561409. The next prime is 60561443. The reversal of 60561421 is 12416506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56836521 + 3724900 = 7539^2 + 1930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60561421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60501421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280710 + 30280711.

It is an arithmetic number, because the mean of its divisors is an integer number (30280711).

Almost surely, 2^60561421 is an apocalyptic number.

It is an amenable number.

60561421 is a deficient number, since it is larger than the sum of its proper divisors (1).

60561421 is an equidigital number, since it uses as much as digits as its factorization.

60561421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 60561421 is about 7782.1218828800. The cubic root of 60561421 is about 392.7040247243.

Adding to 60561421 its reverse (12416506), we get a palindrome (72977927).

It can be divided in two parts, 605 and 61421, that added together give a palindrome (62026).

The spelling of 60561421 in words is "sixty million, five hundred sixty-one thousand, four hundred twenty-one".