145647537 has 32 divisors (see below), whose sum is σ = 226394112. Its totient is φ = 81575424.

The previous prime is 145647529. The next prime is 145647553. The reversal of 145647537 is 735746541.

It is a happy number.

It is not a de Polignac number, because 145647537 - 2³ = 145647529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145647587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258418 + ... + 258980.

It is an arithmetic number, because the mean of its divisors is an integer number (7074816).

Almost surely, 2^145647537 is an apocalyptic number.

It is an amenable number.

145647537 is a deficient number, since it is larger than the sum of its proper divisors (80746575).

145647537 is a wasteful number, since it uses less digits than its factorization.

145647537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its digits is 352800, while the sum is 42.

The square root of 145647537 is about 12068.4521377018. The cubic root of 145647537 is about 526.1396702449.

The spelling of 145647537 in words is "one hundred forty-five million, six hundred forty-seven thousand, five hundred thirty-seven".