1554281 has 2 divisors, whose sum is σ = 1554282. Its totient is φ = 1554280.

The previous prime is 1554277. The next prime is 1554283. The reversal of 1554281 is 1824551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1478656 + 75625 = 1216^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1554281 - 2² = 1554277 is a prime.

It is a super-2 number, since 2×1554281² = 4831578853922, which contains 22 as substring.

Together with 1554283, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1554281.

It is not a weakly prime, because it can be changed into another prime (1554283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777140 + 777141.

It is an arithmetic number, because the mean of its divisors is an integer number (777141).

2^1554281 is an apocalyptic number.

It is an amenable number.

1554281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554281 is an equidigital number, since it uses as much as digits as its factorization.

1554281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 1554281 is about 1246.7080652663. The cubic root of 1554281 is about 115.8359005464.

The spelling of 1554281 in words is "one million, five hundred fifty-four thousand, two hundred eighty-one".