145461897 has 12 divisors (see below), whose sum is σ = 240127680. Its totient is φ = 83121048.

The previous prime is 145461893. The next prime is 145461907. The reversal of 145461897 is 798164541.

145461897 is a `hidden beast` number, since 1 + 4 + 546 + 18 + 97 = 666.

It is not a de Polignac number, because 145461897 - 2² = 145461893 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (145461893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1154397 + ... + 1154522.

It is an arithmetic number, because the mean of its divisors is an integer number (20010640).

Almost surely, 2^145461897 is an apocalyptic number.

It is an amenable number.

145461897 is a deficient number, since it is larger than the sum of its proper divisors (94665783).

145461897 is a wasteful number, since it uses less digits than its factorization.

145461897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308932 (or 2308929 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 145461897 is about 12060.7585582334. The cubic root of 145461897 is about 525.9160388282.

The spelling of 145461897 in words is "one hundred forty-five million, four hundred sixty-one thousand, eight hundred ninety-seven".