551398201 has 2 divisors, whose sum is σ = 551398202. Its totient is φ = 551398200.

The previous prime is 551398189. The next prime is 551398241. The reversal of 551398201 is 102893155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551122576 + 275625 = 23476^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 551398201 - 2¹⁵ = 551365433 is a prime.

It is not a weakly prime, because it can be changed into another prime (551398241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275699100 + 275699101.

It is an arithmetic number, because the mean of its divisors is an integer number (275699101).

Almost surely, 2^551398201 is an apocalyptic number.

It is an amenable number.

551398201 is a deficient number, since it is larger than the sum of its proper divisors (1).

551398201 is an equidigital number, since it uses as much as digits as its factorization.

551398201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 551398201 is about 23481.8696231795. The cubic root of 551398201 is about 820.0149714697.

The spelling of 551398201 in words is "five hundred fifty-one million, three hundred ninety-eight thousand, two hundred one".