1214125553 has 4 divisors (see below), whose sum is σ = 1215382080. Its totient is φ = 1212869028.

The previous prime is 1214125547. The next prime is 1214125589. The reversal of 1214125553 is 3555214121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3555214121 = 23 ⋅154574527.

It is a cyclic number.

It is not a de Polignac number, because 1214125553 - 2¹² = 1214121457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214125453) 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, 626813 + ... + 628746.

It is an arithmetic number, because the mean of its divisors is an integer number (303845520).

Almost surely, 2^1214125553 is an apocalyptic number.

It is an amenable number.

1214125553 is a deficient number, since it is larger than the sum of its proper divisors (1256527).

1214125553 is an equidigital number, since it uses as much as digits as its factorization.

1214125553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256526.

The product of its digits is 6000, while the sum is 29.

The square root of 1214125553 is about 34844.3044556783. The cubic root of 1214125553 is about 1066.8119369312.

Adding to 1214125553 its reverse (3555214121), we get a palindrome (4769339674).

The spelling of 1214125553 in words is "one billion, two hundred fourteen million, one hundred twenty-five thousand, five hundred fifty-three".