54700991 has 2 divisors, whose sum is σ = 54700992. Its totient is φ = 54700990.

The previous prime is 54700973. The next prime is 54700993. The reversal of 54700991 is 19900745.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54700991 - 2¹⁴ = 54684607 is a prime.

Together with 54700993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54700993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27350495 + 27350496.

It is an arithmetic number, because the mean of its divisors is an integer number (27350496).

Almost surely, 2^54700991 is an apocalyptic number.

54700991 is a deficient number, since it is larger than the sum of its proper divisors (1).

54700991 is an equidigital number, since it uses as much as digits as its factorization.

54700991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 54700991 is about 7396.0118307098. The cubic root of 54700991 is about 379.6048315824.

The spelling of 54700991 in words is "fifty-four million, seven hundred thousand, nine hundred ninety-one".