145501547 has 4 divisors (see below), whose sum is σ = 145552056. Its totient is φ = 145451040.

The previous prime is 145501523. The next prime is 145501567. The reversal of 145501547 is 745105541.

145501547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745105541 = 461 ⋅1616281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145501547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145501567) 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, 20654 + ... + 26787.

It is an arithmetic number, because the mean of its divisors is an integer number (36388014).

Almost surely, 2^145501547 is an apocalyptic number.

145501547 is a deficient number, since it is larger than the sum of its proper divisors (50509).

145501547 is an equidigital number, since it uses as much as digits as its factorization.

145501547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50508.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 145501547 is about 12062.4022068575. The cubic root of 145501547 is about 525.9638192138.

The spelling of 145501547 in words is "one hundred forty-five million, five hundred one thousand, five hundred forty-seven".