145901397 has 16 divisors (see below), whose sum is σ = 208483200. Its totient is φ = 90522432.

The previous prime is 145901389. The next prime is 145901417. The reversal of 145901397 is 793109541.

It is a happy number.

It is not a de Polignac number, because 145901397 - 2³ = 145901389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145901317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26022 + ... + 31127.

It is an arithmetic number, because the mean of its divisors is an integer number (13030200).

Almost surely, 2^145901397 is an apocalyptic number.

It is an amenable number.

145901397 is a deficient number, since it is larger than the sum of its proper divisors (62581803).

145901397 is a wasteful number, since it uses less digits than its factorization.

145901397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57212.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 145901397 is about 12078.9650632825. The cubic root of 145901397 is about 526.4451755624.

The spelling of 145901397 in words is "one hundred forty-five million, nine hundred one thousand, three hundred ninety-seven".