145893857 has 2 divisors, whose sum is σ = 145893858. Its totient is φ = 145893856.

The previous prime is 145893851. The next prime is 145893863. The reversal of 145893857 is 758398541.

It is a balanced prime because it is at equal distance from previous prime (145893851) and next prime (145893863).

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 46771921 = 9956^2 + 6839^2 .

It is a cyclic number.

It is not a de Polignac number, because 145893857 - 2¹⁰ = 145892833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145893851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72946928 + 72946929.

It is an arithmetic number, because the mean of its divisors is an integer number (72946929).

Almost surely, 2^145893857 is an apocalyptic number.

It is an amenable number.

145893857 is a deficient number, since it is larger than the sum of its proper divisors (1).

145893857 is an equidigital number, since it uses as much as digits as its factorization.

145893857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 145893857 is about 12078.6529464175. The cubic root of 145893857 is about 526.4361067322.

The spelling of 145893857 in words is "one hundred forty-five million, eight hundred ninety-three thousand, eight hundred fifty-seven".