255545401 has 4 divisors (see below), whose sum is σ = 259144704. Its totient is φ = 251946100.

The previous prime is 255545371. The next prime is 255545413. The reversal of 255545401 is 104545552.

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 255545401 - 2¹⁷ = 255414329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255545471) 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, 1799545 + ... + 1799686.

It is an arithmetic number, because the mean of its divisors is an integer number (64786176).

Almost surely, 2^255545401 is an apocalyptic number.

It is an amenable number.

255545401 is a deficient number, since it is larger than the sum of its proper divisors (3599303).

255545401 is an equidigital number, since it uses as much as digits as its factorization.

255545401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599302.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 255545401 is about 15985.7874688737. The cubic root of 255545401 is about 634.5843486494.

The spelling of 255545401 in words is "two hundred fifty-five million, five hundred forty-five thousand, four hundred one".