20548951 has 2 divisors, whose sum is σ = 20548952. Its totient is φ = 20548950.

The previous prime is 20548919. The next prime is 20548961. The reversal of 20548951 is 15984502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20548951 - 2⁵ = 20548919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20548901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10274475 + 10274476.

It is an arithmetic number, because the mean of its divisors is an integer number (10274476).

Almost surely, 2^20548951 is an apocalyptic number.

20548951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20548951 is an equidigital number, since it uses as much as digits as its factorization.

20548951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 20548951 is about 4533.0950795235. The cubic root of 20548951 is about 273.9028506353.

The spelling of 20548951 in words is "twenty million, five hundred forty-eight thousand, nine hundred fifty-one".