1400553 has 48 divisors (see below), whose sum is σ = 2635776. Its totient is φ = 695520.

The previous prime is 1400543. The next prime is 1400557. The reversal of 1400553 is 3550041.

It is not a de Polignac number, because 1400553 - 2⁶ = 1400489 is a prime.

It is an Ulam number.

1400553 is a lucky number.

It is a congruent number.

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 in 47 ways as a sum of consecutive naturals, for example, 29776 + ... + 29822.

It is an arithmetic number, because the mean of its divisors is an integer number (54912).

2^1400553 is an apocalyptic number.

It is an amenable number.

1400553 is a deficient number, since it is larger than the sum of its proper divisors (1235223).

1400553 is a wasteful number, since it uses less digits than its factorization.

1400553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1400553 is about 1183.4496186995. The cubic root of 1400553 is about 111.8836216736.

Adding to 1400553 its reverse (3550041), we get a palindrome (4950594).

It can be divided in two parts, 1400 and 553, that added together give a triangular number (1953 = T₆₂).

The spelling of 1400553 in words is "one million, four hundred thousand, five hundred fifty-three".