145903547 has 2 divisors, whose sum is σ = 145903548. Its totient is φ = 145903546.

The previous prime is 145903531. The next prime is 145903573. The reversal of 145903547 is 745309541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145903547 - 2⁴ = 145903531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145903547.

It is not a weakly prime, because it can be changed into another prime (145903447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72951773 + 72951774.

It is an arithmetic number, because the mean of its divisors is an integer number (72951774).

Almost surely, 2^145903547 is an apocalyptic number.

145903547 is a deficient number, since it is larger than the sum of its proper divisors (1).

145903547 is an equidigital number, since it uses as much as digits as its factorization.

145903547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 145903547 is about 12079.0540606456. The cubic root of 145903547 is about 526.4477614448.

The spelling of 145903547 in words is "one hundred forty-five million, nine hundred three thousand, five hundred forty-seven".