20210530454 has 4 divisors (see below), whose sum is σ = 30315795684. Its totient is φ = 10105265226.

The previous prime is 20210530441. The next prime is 20210530469. The reversal of 20210530454 is 45403501202.

It is a happy number.

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

It is a super-2 number, since 2×20210530454² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052632612 + ... + 5052632615.

It is an arithmetic number, because the mean of its divisors is an integer number (7578948921).

Almost surely, 2^20210530454 is an apocalyptic number.

20210530454 is a deficient number, since it is larger than the sum of its proper divisors (10105265230).

20210530454 is a wasteful number, since it uses less digits than its factorization.

20210530454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105265229.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20210530454 in words is "twenty billion, two hundred ten million, five hundred thirty thousand, four hundred fifty-four".