551400231401 has 2 divisors, whose sum is σ = 551400231402. Its totient is φ = 551400231400.

The previous prime is 551400231391. The next prime is 551400231439. The reversal of 551400231401 is 104132004155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335524770025 + 215875461376 = 579245^2 + 464624^2 .

It is a cyclic number.

It is not a de Polignac number, because 551400231401 - 2²² = 551396037097 is a prime.

It is not a weakly prime, because it can be changed into another prime (551400281401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275700115700 + 275700115701.

It is an arithmetic number, because the mean of its divisors is an integer number (275700115701).

Almost surely, 2^551400231401 is an apocalyptic number.

It is an amenable number.

551400231401 is a deficient number, since it is larger than the sum of its proper divisors (1).

551400231401 is an equidigital number, since it uses as much as digits as its factorization.

551400231401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 551400231401 its reverse (104132004155), we get a palindrome (655532235556).

The spelling of 551400231401 in words is "five hundred fifty-one billion, four hundred million, two hundred thirty-one thousand, four hundred one".