145384537 has 8 divisors (see below), whose sum is σ = 148462056. Its totient is φ = 142336512.

The previous prime is 145384517. The next prime is 145384567. The reversal of 145384537 is 735483541.

It can be written as a sum of positive squares in 4 ways, for example, as 15515721 + 129868816 = 3939^2 + 11396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145384537 is a prime.

It is a super-2 number, since 2×145384537² = 42273327197408738, which contains 22 as substring.

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 145384537.

It is not an unprimeable number, because it can be changed into a prime (145384517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733 + ... + 17269.

It is an arithmetic number, because the mean of its divisors is an integer number (18557757).

Almost surely, 2^145384537 is an apocalyptic number.

It is an amenable number.

145384537 is a deficient number, since it is larger than the sum of its proper divisors (3077519).

145384537 is a wasteful number, since it uses less digits than its factorization.

145384537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14747.

The product of its digits is 201600, while the sum is 40.

The square root of 145384537 is about 12057.5510365911. The cubic root of 145384537 is about 525.8227908595.

The spelling of 145384537 in words is "one hundred forty-five million, three hundred eighty-four thousand, five hundred thirty-seven".