551401237 has 2 divisors, whose sum is σ = 551401238. Its totient is φ = 551401236.

The previous prime is 551401217. The next prime is 551401271. The reversal of 551401237 is 732104155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433222596 + 118178641 = 20814^2 + 10871^2 .

It is a cyclic number.

It is not a de Polignac number, because 551401237 - 2¹⁵ = 551368469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551401217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275700618 + 275700619.

It is an arithmetic number, because the mean of its divisors is an integer number (275700619).

Almost surely, 2^551401237 is an apocalyptic number.

It is an amenable number.

551401237 is a deficient number, since it is larger than the sum of its proper divisors (1).

551401237 is an equidigital number, since it uses as much as digits as its factorization.

551401237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 551401237 is about 23481.9342687096. The cubic root of 551401237 is about 820.0164764685.

The spelling of 551401237 in words is "five hundred fifty-one million, four hundred one thousand, two hundred thirty-seven".