1400557 has 2 divisors, whose sum is σ = 1400558. Its totient is φ = 1400556.

The previous prime is 1400543. The next prime is 1400587. The reversal of 1400557 is 7550041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 188356 = 1101^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400557 - 2¹⁵ = 1367789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700278 + 700279.

It is an arithmetic number, because the mean of its divisors is an integer number (700279).

2^1400557 is an apocalyptic number.

It is an amenable number.

1400557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400557 is an equidigital number, since it uses as much as digits as its factorization.

1400557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 1400557 is about 1183.4513086731. The cubic root of 1400557 is about 111.8837281873.

Adding to 1400557 its reverse (7550041), we get a palindrome (8950598).

The spelling of 1400557 in words is "one million, four hundred thousand, five hundred fifty-seven".