54087857 has 2 divisors, whose sum is σ = 54087858. Its totient is φ = 54087856.

The previous prime is 54087853. The next prime is 54087883. The reversal of 54087857 is 75878045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 564001 = 7316^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 54087857 - 2² = 54087853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54087853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27043928 + 27043929.

It is an arithmetic number, because the mean of its divisors is an integer number (27043929).

Almost surely, 2^54087857 is an apocalyptic number.

It is an amenable number.

54087857 is a deficient number, since it is larger than the sum of its proper divisors (1).

54087857 is an equidigital number, since it uses as much as digits as its factorization.

54087857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 54087857 is about 7354.4447105135. Note that the first 3 decimals coincide. The cubic root of 54087857 is about 378.1811907205.

The spelling of 54087857 in words is "fifty-four million, eighty-seven thousand, eight hundred fifty-seven".