145383797 has 4 divisors (see below), whose sum is σ = 156567180. Its totient is φ = 134200416.

The previous prime is 145383793. The next prime is 145383803. The reversal of 145383797 is 797383541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797383541 = 6823 ⋅116867.

It can be written as a sum of positive squares in 2 ways, for example, as 39828721 + 105555076 = 6311^2 + 10274^2 .

It is a cyclic number.

It is not a de Polignac number, because 145383797 - 2² = 145383793 is a prime.

It is a super-2 number, since 2×145383797² = 42272896860274418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145383793) 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 3 ways as a sum of consecutive naturals, for example, 5591672 + ... + 5591697.

It is an arithmetic number, because the mean of its divisors is an integer number (39141795).

Almost surely, 2^145383797 is an apocalyptic number.

It is an amenable number.

145383797 is a deficient number, since it is larger than the sum of its proper divisors (11183383).

145383797 is a wasteful number, since it uses less digits than its factorization.

145383797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11183382.

The product of its digits is 635040, while the sum is 47.

The square root of 145383797 is about 12057.5203503871. The cubic root of 145383797 is about 525.8218987207.

The spelling of 145383797 in words is "one hundred forty-five million, three hundred eighty-three thousand, seven hundred ninety-seven".