551101401 has 14 divisors (see below), whose sum is σ = 826275210. Its totient is φ = 367400448.

The previous prime is 551101399. The next prime is 551101409. The reversal of 551101401 is 104101155.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 545456025 + 5645376 = 23355^2 + 2376^2 .

It is not a de Polignac number, because 551101401 - 2¹ = 551101399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551101409) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 377256 + ... + 378713.

Almost surely, 2^551101401 is an apocalyptic number.

It is an amenable number.

551101401 is a deficient number, since it is larger than the sum of its proper divisors (275173809).

551101401 is an frugal number, since it uses more digits than its factorization.

551101401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755987 (or 755972 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 551101401 is about 23475.5490031650. The cubic root of 551101401 is about 819.8678157939.

Adding to 551101401 its reverse (104101155), we get a palindrome (655202556).

The spelling of 551101401 in words is "five hundred fifty-one million, one hundred one thousand, four hundred one".