21514941 has 12 divisors (see below), whose sum is σ = 35516832. Its totient is φ = 12294216.

The previous prime is 21514937. The next prime is 21514957. The reversal of 21514941 is 14941512.

It is not a de Polignac number, because 21514941 - 2² = 21514937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170691 + ... + 170816.

It is an arithmetic number, because the mean of its divisors is an integer number (2959736).

Almost surely, 2^21514941 is an apocalyptic number.

21514941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21514941 is a deficient number, since it is larger than the sum of its proper divisors (14001891).

21514941 is a wasteful number, since it uses less digits than its factorization.

21514941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341520 (or 341517 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 21514941 is about 4638.4200974039. The cubic root of 21514941 is about 278.1292853104.

The spelling of 21514941 in words is "twenty-one million, five hundred fourteen thousand, nine hundred forty-one".