145699245 has 12 divisors (see below), whose sum is σ = 252545436. Its totient is φ = 77706240.

The previous prime is 145699241. The next prime is 145699247. The reversal of 145699245 is 542996541.

It can be written as a sum of positive squares in 2 ways, for example, as 56340036 + 89359209 = 7506^2 + 9453^2 .

It is not a de Polignac number, because 145699245 - 2² = 145699241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3237761 = 145699245 / (1 + 4 + 5 + 6 + 9 + 9 + 2 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 145699245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145699241) 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, 1618836 + ... + 1618925.

It is an arithmetic number, because the mean of its divisors is an integer number (21045453).

Almost surely, 2^145699245 is an apocalyptic number.

145699245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145699245 is a deficient number, since it is larger than the sum of its proper divisors (106846191).

145699245 is a wasteful number, since it uses less digits than its factorization.

145699245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237772 (or 3237769 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 145699245 is about 12070.5942272947. The cubic root of 145699245 is about 526.2019265012.

The spelling of 145699245 in words is "one hundred forty-five million, six hundred ninety-nine thousand, two hundred forty-five".