54999551 has 2 divisors, whose sum is σ = 54999552. Its totient is φ = 54999550.

The previous prime is 54999523. The next prime is 54999559. The reversal of 54999551 is 15599945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54999551 - 2¹⁰ = 54998527 is a prime.

It is a super-2 number, since 2×54999551² = 6049901220403202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54999496 and 54999505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54999559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27499775 + 27499776.

It is an arithmetic number, because the mean of its divisors is an integer number (27499776).

Almost surely, 2^54999551 is an apocalyptic number.

54999551 is a deficient number, since it is larger than the sum of its proper divisors (1).

54999551 is an equidigital number, since it uses as much as digits as its factorization.

54999551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 364500, while the sum is 47.

The square root of 54999551 is about 7416.1682154601. The cubic root of 54999551 is about 380.2942112093.

The spelling of 54999551 in words is "fifty-four million, nine hundred ninety-nine thousand, five hundred fifty-one".