1400554 has 4 divisors (see below), whose sum is σ = 2100834.
Its totient is φ = 700276.
The previous prime is 1400543. The next prime is 1400557. The reversal of 1400554 is 4550041.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4550041 = 487 ⋅9343.
It can be written as a sum of positive squares in only one way, i.e., 1046529 + 354025 = 1023^2 + 595^2
It is not an unprimeable number, because it can be changed into a prime (1400557) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350137 + ... + 350140.
21400554 is an apocalyptic number.
1400554 is a deficient number, since it is larger than the sum of its proper divisors (700280).
1400554 is an equidigital number, since it uses as much as digits as its factorization.
1400554 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 700279.
The product of its (nonzero) digits is 400, while the sum is 19.
The square root of 1400554 is about 1183.4500411931.
The cubic root of 1400554 is about 111.8836483020.
Adding to 1400554 its reverse (4550041), we get a palindrome (5950595).
The spelling of 1400554 in words is "one million, four hundred thousand, five hundred fifty-four".