255219401 has 8 divisors (see below), whose sum is σ = 264217800. Its totient is φ = 246234240.

The previous prime is 255219347. The next prime is 255219403. The reversal of 255219401 is 104912552.

It can be written as a sum of positive squares in 4 ways, for example, as 21160000 + 234059401 = 4600^2 + 15299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255219401 - 2¹⁴ = 255203017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255219403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51605 + ... + 56333.

It is an arithmetic number, because the mean of its divisors is an integer number (33027225).

Almost surely, 2^255219401 is an apocalyptic number.

255219401 is the 7145-th centered decagonal number.

It is an amenable number.

255219401 is a deficient number, since it is larger than the sum of its proper divisors (8998399).

255219401 is a wasteful number, since it uses less digits than its factorization.

255219401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 255219401 is about 15975.5876574228. The cubic root of 255219401 is about 634.3143867961.

The spelling of 255219401 in words is "two hundred fifty-five million, two hundred nineteen thousand, four hundred one".