551022506401 has 16 divisors (see below), whose sum is σ = 569789326480. Its totient is φ = 532462844160.

The previous prime is 551022506383. The next prime is 551022506429. The reversal of 551022506401 is 104605220155.

It can be written as a sum of positive squares in 8 ways, for example, as 2830346401 + 548192160000 = 53201^2 + 740400^2 .

It is not a de Polignac number, because 551022506401 - 2¹³ = 551022498209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551022506201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12880435 + ... + 12923143.

It is an arithmetic number, because the mean of its divisors is an integer number (35611832905).

Almost surely, 2^551022506401 is an apocalyptic number.

It is an amenable number.

551022506401 is a deficient number, since it is larger than the sum of its proper divisors (18766820079).

551022506401 is a wasteful number, since it uses less digits than its factorization.

551022506401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45124.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 551022506401 its reverse (104605220155), we get a palindrome (655627726556).

The spelling of 551022506401 in words is "five hundred fifty-one billion, twenty-two million, five hundred six thousand, four hundred one".