145752637 has 4 divisors (see below), whose sum is σ = 150778620. Its totient is φ = 140726656.

The previous prime is 145752631. The next prime is 145752647. The reversal of 145752637 is 736257541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47623801 + 98128836 = 6901^2 + 9906^2 .

It is a cyclic number.

It is not a de Polignac number, because 145752637 - 2¹¹ = 145750589 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145752637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145752631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512948 + ... + 2513005.

It is an arithmetic number, because the mean of its divisors is an integer number (37694655).

Almost surely, 2^145752637 is an apocalyptic number.

It is an amenable number.

145752637 is a deficient number, since it is larger than the sum of its proper divisors (5025983).

145752637 is an equidigital number, since it uses as much as digits as its factorization.

145752637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025982.

The product of its digits is 176400, while the sum is 40.

The square root of 145752637 is about 12072.8056805367. The cubic root of 145752637 is about 526.2661948326.

The spelling of 145752637 in words is "one hundred forty-five million, seven hundred fifty-two thousand, six hundred thirty-seven".