2091372551 has 2 divisors, whose sum is σ = 2091372552. Its totient is φ = 2091372550.

The previous prime is 2091372533. The next prime is 2091372631. The reversal of 2091372551 is 1552731902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2091372551 - 2¹⁸ = 2091110407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091377551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045686275 + 1045686276.

It is an arithmetic number, because the mean of its divisors is an integer number (1045686276).

Almost surely, 2^2091372551 is an apocalyptic number.

2091372551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091372551 is an equidigital number, since it uses as much as digits as its factorization.

2091372551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 2091372551 is about 45731.5268824473. The cubic root of 2091372551 is about 1278.8230862929.

The spelling of 2091372551 in words is "two billion, ninety-one million, three hundred seventy-two thousand, five hundred fifty-one".