54995491 has 2 divisors, whose sum is σ = 54995492. Its totient is φ = 54995490.

The previous prime is 54995429. The next prime is 54995497. The reversal of 54995491 is 19459945.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54995491 - 2⁷ = 54995363 is a prime.

It is not a weakly prime, because it can be changed into another prime (54995497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27497745 + 27497746.

It is an arithmetic number, because the mean of its divisors is an integer number (27497746).

Almost surely, 2^54995491 is an apocalyptic number.

54995491 is a deficient number, since it is larger than the sum of its proper divisors (1).

54995491 is an equidigital number, since it uses as much as digits as its factorization.

54995491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The square root of 54995491 is about 7415.8944841469. The cubic root of 54995491 is about 380.2848533602.

The spelling of 54995491 in words is "fifty-four million, nine hundred ninety-five thousand, four hundred ninety-one".