145857097 has 2 divisors, whose sum is σ = 145857098. Its totient is φ = 145857096.

The previous prime is 145857079. The next prime is 145857181. The reversal of 145857097 is 790758541.

It is a happy number.

Together with previous prime (145857079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145467721 + 389376 = 12061^2 + 624^2 .

It is an emirp because it is prime and its reverse (790758541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145857097 - 2⁷ = 145856969 is a prime.

It is not a weakly prime, because it can be changed into another prime (145857017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72928548 + 72928549.

It is an arithmetic number, because the mean of its divisors is an integer number (72928549).

Almost surely, 2^145857097 is an apocalyptic number.

It is an amenable number.

145857097 is a deficient number, since it is larger than the sum of its proper divisors (1).

145857097 is an equidigital number, since it uses as much as digits as its factorization.

145857097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 145857097 is about 12077.1311576881. The cubic root of 145857097 is about 526.3918887022.

The spelling of 145857097 in words is "one hundred forty-five million, eight hundred fifty-seven thousand, ninety-seven".