1214400553 has 4 divisors (see below), whose sum is σ = 1216645828. Its totient is φ = 1212155280.

The previous prime is 1214400547. The next prime is 1214400563. The reversal of 1214400553 is 3550044121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 972691344 + 241709209 = 31188^2 + 15547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214400553 - 2²¹ = 1212303401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214400503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121826 + ... + 1122907.

It is an arithmetic number, because the mean of its divisors is an integer number (304161457).

Almost surely, 2^1214400553 is an apocalyptic number.

It is an amenable number.

1214400553 is a deficient number, since it is larger than the sum of its proper divisors (2245275).

1214400553 is an equidigital number, since it uses as much as digits as its factorization.

1214400553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245274.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1214400553 is about 34848.2503578013. The cubic root of 1214400553 is about 1066.8924753168.

Adding to 1214400553 its reverse (3550044121), we get a palindrome (4764444674).

The spelling of 1214400553 in words is "one billion, two hundred fourteen million, four hundred thousand, five hundred fifty-three".