551548091 has 2 divisors, whose sum is σ = 551548092. Its totient is φ = 551548090.

The previous prime is 551548079. The next prime is 551548097. The reversal of 551548091 is 190845155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551548091 - 2¹⁸ = 551285947 is a prime.

It is not a weakly prime, because it can be changed into another prime (551548097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275774045 + 275774046.

It is an arithmetic number, because the mean of its divisors is an integer number (275774046).

Almost surely, 2^551548091 is an apocalyptic number.

551548091 is a deficient number, since it is larger than the sum of its proper divisors (1).

551548091 is an equidigital number, since it uses as much as digits as its factorization.

551548091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 551548091 is about 23485.0610175916. The cubic root of 551548091 is about 820.0892679933.

The spelling of 551548091 in words is "five hundred fifty-one million, five hundred forty-eight thousand, ninety-one".