20540701 has 4 divisors (see below), whose sum is σ = 20555712. Its totient is φ = 20525692.

The previous prime is 20540699. The next prime is 20540719. The reversal of 20540701 is 10704502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20540701 - 2¹ = 20540699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540731) 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, 5221 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (5138928).

Almost surely, 2^20540701 is an apocalyptic number.

It is an amenable number.

20540701 is a deficient number, since it is larger than the sum of its proper divisors (15011).

20540701 is a wasteful number, since it uses less digits than its factorization.

20540701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20540701 is about 4532.1850138758. The cubic root of 20540701 is about 273.8661901914.

The spelling of 20540701 in words is "twenty million, five hundred forty thousand, seven hundred one".