54491156761523 has 2 divisors, whose sum is σ = 54491156761524. Its totient is φ = 54491156761522.

The previous prime is 54491156761511. The next prime is 54491156761543. The reversal of 54491156761523 is 32516765119445.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54491156761523 is a prime.

It is a super-2 number, since 2×54491156761523² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54491156761543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27245578380761 + 27245578380762.

It is an arithmetic number, because the mean of its divisors is an integer number (27245578380762).

Almost surely, 2^{54491156761523} is an apocalyptic number.

54491156761523 is a deficient number, since it is larger than the sum of its proper divisors (1).

54491156761523 is an equidigital number, since it uses as much as digits as its factorization.

54491156761523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216000, while the sum is 59.

The spelling of 54491156761523 in words is "fifty-four trillion, four hundred ninety-one billion, one hundred fifty-six million, seven hundred sixty-one thousand, five hundred twenty-three".