21541034 has 8 divisors (see below), whose sum is σ = 32332608. Its totient is φ = 10763500.

The previous prime is 21541033. The next prime is 21541043. The reversal of 21541034 is 43014512.

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

It is a super-2 number, since 2×21541034² = 928032291578312, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21540997 and 21541015.

It is not an unprimeable number, because it can be changed into a prime (21541033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159 + ... + 6909.

It is an arithmetic number, because the mean of its divisors is an integer number (4041576).

Almost surely, 2^21541034 is an apocalyptic number.

21541034 is a deficient number, since it is larger than the sum of its proper divisors (10791574).

21541034 is a wasteful number, since it uses less digits than its factorization.

21541034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21541034 is about 4641.2319485240. The cubic root of 21541034 is about 278.2416769053.

Adding to 21541034 its reverse (43014512), we get a palindrome (64555546).

The spelling of 21541034 in words is "twenty-one million, five hundred forty-one thousand, thirty-four".