21376495 has 12 divisors (see below), whose sum is σ = 29840184. Its totient is φ = 14658000.

The previous prime is 21376483. The next prime is 21376507. The reversal of 21376495 is 59467312.

It is an interprime number because it is at equal distance from previous prime (21376483) and next prime (21376507).

It is not a de Polignac number, because 21376495 - 2¹⁹ = 20852207 is a prime.

It is a super-3 number, since 3×21376495³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43381 + ... + 43870.

It is an arithmetic number, because the mean of its divisors is an integer number (2486682).

Almost surely, 2^21376495 is an apocalyptic number.

21376495 is a deficient number, since it is larger than the sum of its proper divisors (8463689).

21376495 is an equidigital number, since it uses as much as digits as its factorization.

21376495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87270 (or 87263 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 21376495 is about 4623.4721800828. The cubic root of 21376495 is about 277.5314251672.

The spelling of 21376495 in words is "twenty-one million, three hundred seventy-six thousand, four hundred ninety-five".