21277483 has 8 divisors (see below), whose sum is σ = 21873600. Its totient is φ = 20685120.

The previous prime is 21277469. The next prime is 21277519. The reversal of 21277483 is 38477212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21277483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21277423) 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, 13566 + ... + 15052.

It is an arithmetic number, because the mean of its divisors is an integer number (2734200).

Almost surely, 2^21277483 is an apocalyptic number.

21277483 is a deficient number, since it is larger than the sum of its proper divisors (596117).

21277483 is a wasteful number, since it uses less digits than its factorization.

21277483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877.

The product of its digits is 18816, while the sum is 34.

The square root of 21277483 is about 4612.7522153266. The cubic root of 21277483 is about 277.1022703598.

The spelling of 21277483 in words is "twenty-one million, two hundred seventy-seven thousand, four hundred eighty-three".