254451661 has 8 divisors (see below), whose sum is σ = 257826240. Its totient is φ = 251092608.

The previous prime is 254451619. The next prime is 254451677. The reversal of 254451661 is 166154452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254451661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254451061) 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, 31170 + ... + 38476.

It is an arithmetic number, because the mean of its divisors is an integer number (32228280).

Almost surely, 2^254451661 is an apocalyptic number.

It is an amenable number.

254451661 is a deficient number, since it is larger than the sum of its proper divisors (3374579).

254451661 is an equidigital number, since it uses as much as digits as its factorization.

254451661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763.

The product of its digits is 28800, while the sum is 34.

The square root of 254451661 is about 15951.5410227351. The cubic root of 254451661 is about 633.6777088950.

The spelling of 254451661 in words is "two hundred fifty-four million, four hundred fifty-one thousand, six hundred sixty-one".