145634237 has 4 divisors (see below), whose sum is σ = 166439136. Its totient is φ = 124829340.

The previous prime is 145634233. The next prime is 145634261. The reversal of 145634237 is 732436541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145634237 - 2² = 145634233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145634197 and 145634206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145634231) 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, 10402439 + ... + 10402452.

It is an arithmetic number, because the mean of its divisors is an integer number (41609784).

Almost surely, 2^145634237 is an apocalyptic number.

It is an amenable number.

145634237 is a deficient number, since it is larger than the sum of its proper divisors (20804899).

145634237 is an equidigital number, since it uses as much as digits as its factorization.

145634237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20804898.

The product of its digits is 60480, while the sum is 35.

The square root of 145634237 is about 12067.9011016829. The cubic root of 145634237 is about 526.1236547077.

The spelling of 145634237 in words is "one hundred forty-five million, six hundred thirty-four thousand, two hundred thirty-seven".