145234997 has 8 divisors (see below), whose sum is σ = 148991640. Its totient is φ = 141488640.

The previous prime is 145234981. The next prime is 145235003. The reversal of 145234997 is 799432541.

It can be written as a sum of positive squares in 4 ways, for example, as 128881 + 145106116 = 359^2 + 12046^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145234997 - 2⁴ = 145234981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145234937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31853 + ... + 36125.

It is an arithmetic number, because the mean of its divisors is an integer number (18623955).

Almost surely, 2^145234997 is an apocalyptic number.

It is an amenable number.

145234997 is a deficient number, since it is larger than the sum of its proper divisors (3756643).

145234997 is an equidigital number, since it uses as much as digits as its factorization.

145234997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143.

The product of its digits is 272160, while the sum is 44.

The square root of 145234997 is about 12051.3483477991. The cubic root of 145234997 is about 525.6424449601.

The spelling of 145234997 in words is "one hundred forty-five million, two hundred thirty-four thousand, nine hundred ninety-seven".