145394897 has 16 divisors (see below), whose sum is σ = 166017600. Its totient is φ = 126466560.

The previous prime is 145394869. The next prime is 145394927. The reversal of 145394897 is 798493541.

It is a cyclic number.

It is not a de Polignac number, because 145394897 - 2¹² = 145390801 is a prime.

It is a super-2 number, since 2×145394897² = 42279352147281218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145394827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7754 + ... + 18732.

It is an arithmetic number, because the mean of its divisors is an integer number (10376100).

Almost surely, 2^145394897 is an apocalyptic number.

145394897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

145394897 is a deficient number, since it is larger than the sum of its proper divisors (20622703).

145394897 is a wasteful number, since it uses less digits than its factorization.

145394897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056.

The product of its digits is 1088640, while the sum is 50.

The square root of 145394897 is about 12057.9806352473. The cubic root of 145394897 is about 525.8352804837.

The spelling of 145394897 in words is "one hundred forty-five million, three hundred ninety-four thousand, eight hundred ninety-seven".