60051721 has 4 divisors (see below), whose sum is σ = 62122500. Its totient is φ = 57980944.

The previous prime is 60051709. The next prime is 60051731. The reversal of 60051721 is 12715006.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12715006 = 2 ⋅6357503.

It can be written as a sum of positive squares in 2 ways, for example, as 43560000 + 16491721 = 6600^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 60051721 - 2⁹ = 60051209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 60051692 and 60051701.

It is not an unprimeable number, because it can be changed into a prime (60051731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035346 + ... + 1035403.

It is an arithmetic number, because the mean of its divisors is an integer number (15530625).

Almost surely, 2^60051721 is an apocalyptic number.

It is an amenable number.

60051721 is a deficient number, since it is larger than the sum of its proper divisors (2070779).

60051721 is a wasteful number, since it uses less digits than its factorization.

60051721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070778.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 60051721 is about 7749.3045494418. The cubic root of 60051721 is about 391.5992211816.

Adding to 60051721 its reverse (12715006), we get a palindrome (72766727).

The spelling of 60051721 in words is "sixty million, fifty-one thousand, seven hundred twenty-one".