60501981 has 8 divisors (see below), whose sum is σ = 80745280. Its totient is φ = 40296672.

The previous prime is 60501979. The next prime is 60502003. The reversal of 60501981 is 18910506.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 60501981 - 2¹ = 60501979 is a prime.

It is a super-2 number, since 2×60501981² = 7320979409848722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60501901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5545 + ... + 12318.

It is an arithmetic number, because the mean of its divisors is an integer number (10093160).

Almost surely, 2^60501981 is an apocalyptic number.

It is an amenable number.

60501981 is a deficient number, since it is larger than the sum of its proper divisors (20243299).

60501981 is a wasteful number, since it uses less digits than its factorization.

60501981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18995.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 60501981 is about 7778.3019355127. The cubic root of 60501981 is about 392.5755052383.

The spelling of 60501981 in words is "sixty million, five hundred one thousand, nine hundred eighty-one".