1551452440222 has 4 divisors (see below), whose sum is σ = 2327178660336. Its totient is φ = 775726220110.

The previous prime is 1551452440217. The next prime is 1551452440231. The reversal of 1551452440222 is 2220442541551.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387863110054 + ... + 387863110057.

It is an arithmetic number, because the mean of its divisors is an integer number (581794665084).

Almost surely, 2^{1551452440222} is an apocalyptic number.

1551452440222 is a deficient number, since it is larger than the sum of its proper divisors (775726220114).

1551452440222 is an equidigital number, since it uses as much as digits as its factorization.

1551452440222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775726220113.

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 1551452440222 its reverse (2220442541551), we get a palindrome (3771894981773).

The spelling of 1551452440222 in words is "one trillion, five hundred fifty-one billion, four hundred fifty-two million, four hundred forty thousand, two hundred twenty-two".