20940501 has 4 divisors (see below), whose sum is σ = 27920672. Its totient is φ = 13960332.

The previous prime is 20940499. The next prime is 20940533. The reversal of 20940501 is 10504902.

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 not a de Polignac number, because 20940501 - 2¹ = 20940499 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 (20940551) 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, 3490081 + ... + 3490086.

It is an arithmetic number, because the mean of its divisors is an integer number (6980168).

Almost surely, 2^20940501 is an apocalyptic number.

It is an amenable number.

20940501 is a deficient number, since it is larger than the sum of its proper divisors (6980171).

20940501 is an equidigital number, since it uses as much as digits as its factorization.

20940501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980170.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20940501 is about 4576.0792169717. The cubic root of 20940501 is about 275.6316104872.

The spelling of 20940501 in words is "twenty million, nine hundred forty thousand, five hundred one".