1400253555 has 16 divisors (see below), whose sum is σ = 2241288864. Its totient is φ = 746507520.

The previous prime is 1400253521. The next prime is 1400253571. The reversal of 1400253555 is 5553520041.

It is a happy number.

It is not a de Polignac number, because 1400253555 - 2⁷ = 1400253427 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24087 + ... + 58143.

It is an arithmetic number, because the mean of its divisors is an integer number (140080554).

Almost surely, 2^1400253555 is an apocalyptic number.

1400253555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1400253555 is a deficient number, since it is larger than the sum of its proper divisors (841035309).

1400253555 is a wasteful number, since it uses less digits than its factorization.

1400253555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36806.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 1400253555 is about 37419.9619855499. The cubic root of 1400253555 is about 1118.7564735225.

Adding to 1400253555 its reverse (5553520041), we get a palindrome (6953773596).

The spelling of 1400253555 in words is "one billion, four hundred million, two hundred fifty-three thousand, five hundred fifty-five".