21295058 has 4 divisors (see below), whose sum is σ = 31942590. Its totient is φ = 10647528.

The previous prime is 21295051. The next prime is 21295073. The reversal of 21295058 is 85059212.

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

It can be written as a sum of positive squares in only one way, i.e., 17749369 + 3545689 = 4213^2 + 1883^2 .

It is not an unprimeable number, because it can be changed into a prime (21295051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5323763 + ... + 5323766.

Almost surely, 2^21295058 is an apocalyptic number.

21295058 is a deficient number, since it is larger than the sum of its proper divisors (10647532).

21295058 is a wasteful number, since it uses less digits than its factorization.

21295058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10647531.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 21295058 is about 4614.6568669837. The cubic root of 21295058 is about 277.1785439826.

The spelling of 21295058 in words is "twenty-one million, two hundred ninety-five thousand, fifty-eight".