551354197 has 2 divisors, whose sum is σ = 551354198. Its totient is φ = 551354196.

The previous prime is 551354147. The next prime is 551354249. The reversal of 551354197 is 791453155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395254161 + 156100036 = 19881^2 + 12494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551354197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551354147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275677098 + 275677099.

It is an arithmetic number, because the mean of its divisors is an integer number (275677099).

Almost surely, 2^551354197 is an apocalyptic number.

It is an amenable number.

551354197 is a deficient number, since it is larger than the sum of its proper divisors (1).

551354197 is an equidigital number, since it uses as much as digits as its factorization.

551354197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 40.

The square root of 551354197 is about 23480.9326262821. The cubic root of 551354197 is about 819.9931572897.

The spelling of 551354197 in words is "five hundred fifty-one million, three hundred fifty-four thousand, one hundred ninety-seven".