145460237 has 4 divisors (see below), whose sum is σ = 156649500. Its totient is φ = 134270976.

The previous prime is 145460213. The next prime is 145460243. The reversal of 145460237 is 732064541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732064541 = 13 ⋅56312657.

It can be written as a sum of positive squares in 2 ways, for example, as 88472836 + 56987401 = 9406^2 + 7549^2 .

It is a cyclic number.

It is not a de Polignac number, because 145460237 - 2¹⁶ = 145394701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145460297) 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, 5594612 + ... + 5594637.

It is an arithmetic number, because the mean of its divisors is an integer number (39162375).

Almost surely, 2^145460237 is an apocalyptic number.

It is an amenable number.

145460237 is a deficient number, since it is larger than the sum of its proper divisors (11189263).

145460237 is a wasteful number, since it uses less digits than its factorization.

145460237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11189262.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 145460237 is about 12060.6897398117. The cubic root of 145460237 is about 525.9140382495.

The spelling of 145460237 in words is "one hundred forty-five million, four hundred sixty thousand, two hundred thirty-seven".