5507001991 has 2 divisors, whose sum is σ = 5507001992. Its totient is φ = 5507001990.

The previous prime is 5507001979. The next prime is 5507002001. The reversal of 5507001991 is 1991007055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5507001991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5507001991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5507001931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753500995 + 2753500996.

It is an arithmetic number, because the mean of its divisors is an integer number (2753500996).

Almost surely, 2^5507001991 is an apocalyptic number.

5507001991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5507001991 is an equidigital number, since it uses as much as digits as its factorization.

5507001991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 5507001991 is about 74209.1772693917. The cubic root of 5507001991 is about 1765.9229247738.

The spelling of 5507001991 in words is "five billion, five hundred seven million, one thousand, nine hundred ninety-one".