1214447551 has 2 divisors, whose sum is σ = 1214447552. Its totient is φ = 1214447550.

The previous prime is 1214447527. The next prime is 1214447623. The reversal of 1214447551 is 1557444121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1214447551 - 2²⁷ = 1080229823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214447651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607223775 + 607223776.

It is an arithmetic number, because the mean of its divisors is an integer number (607223776).

Almost surely, 2^1214447551 is an apocalyptic number.

1214447551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214447551 is an equidigital number, since it uses as much as digits as its factorization.

1214447551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 34.

The square root of 1214447551 is about 34848.9246749451. The cubic root of 1214447551 is about 1066.9062382567.

It can be divided in two parts, 12144 and 47551, that added together give a palindrome (59695).

The spelling of 1214447551 in words is "one billion, two hundred fourteen million, four hundred forty-seven thousand, five hundred fifty-one".