254657213 has 4 divisors (see below), whose sum is σ = 257518620. Its totient is φ = 251795808.

The previous prime is 254657203. The next prime is 254657231. The reversal of 254657213 is 312756452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101566084 + 153091129 = 10078^2 + 12373^2 .

It is a cyclic number.

It is not a de Polignac number, because 254657213 - 2¹⁰ = 254656189 is a prime.

It is a super-2 number, since 2×254657213² = 129700592265854738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254657203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430570 + ... + 1430747.

It is an arithmetic number, because the mean of its divisors is an integer number (64379655).

Almost surely, 2^254657213 is an apocalyptic number.

It is an amenable number.

254657213 is a deficient number, since it is larger than the sum of its proper divisors (2861407).

254657213 is an equidigital number, since it uses as much as digits as its factorization.

254657213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861406.

The product of its digits is 50400, while the sum is 35.

The square root of 254657213 is about 15957.9827359225. The cubic root of 254657213 is about 633.8482961906.

The spelling of 254657213 in words is "two hundred fifty-four million, six hundred fifty-seven thousand, two hundred thirteen".