21345062 has 4 divisors (see below), whose sum is σ = 32017596. Its totient is φ = 10672530.

The previous prime is 21345031. The next prime is 21345067. The reversal of 21345062 is 26054312.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21345062² = 911223343567688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21345067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336264 + ... + 5336267.

It is an arithmetic number, because the mean of its divisors is an integer number (8004399).

Almost surely, 2^21345062 is an apocalyptic number.

21345062 is a deficient number, since it is larger than the sum of its proper divisors (10672534).

21345062 is a wasteful number, since it uses less digits than its factorization.

21345062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672533.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 21345062 is about 4620.0716444661. The cubic root of 21345062 is about 277.3953266991.

Adding to 21345062 its reverse (26054312), we get a palindrome (47399374).

The spelling of 21345062 in words is "twenty-one million, three hundred forty-five thousand, sixty-two".