20255377 has 4 divisors (see below), whose sum is σ = 20540736. Its totient is φ = 19970020.

The previous prime is 20255371. The next prime is 20255393. The reversal of 20255377 is 77355202.

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 a de Polignac number, because none of the positive numbers 2^k-20255377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20255371) 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, 142573 + ... + 142714.

It is an arithmetic number, because the mean of its divisors is an integer number (5135184).

Almost surely, 2^20255377 is an apocalyptic number.

It is an amenable number.

20255377 is a deficient number, since it is larger than the sum of its proper divisors (285359).

20255377 is an equidigital number, since it uses as much as digits as its factorization.

20255377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285358.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 20255377 is about 4500.5974047897. The cubic root of 20255377 is about 272.5922118699.

The spelling of 20255377 in words is "twenty million, two hundred fifty-five thousand, three hundred seventy-seven".