145534973 has 2 divisors, whose sum is σ = 145534974. Its totient is φ = 145534972.

The previous prime is 145534967. The next prime is 145534981. The reversal of 145534973 is 379435541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102475129 + 43059844 = 10123^2 + 6562^2 .

It is a cyclic number.

It is not a de Polignac number, because 145534973 - 2⁸ = 145534717 is a prime.

It is a super-2 number, since 2×145534973² = 42360856732221458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145534973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145534913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72767486 + 72767487.

It is an arithmetic number, because the mean of its divisors is an integer number (72767487).

Almost surely, 2^145534973 is an apocalyptic number.

It is an amenable number.

145534973 is a deficient number, since it is larger than the sum of its proper divisors (1).

145534973 is an equidigital number, since it uses as much as digits as its factorization.

145534973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 145534973 is about 12063.7876722031. The cubic root of 145534973 is about 526.0040926012.

The spelling of 145534973 in words is "one hundred forty-five million, five hundred thirty-four thousand, nine hundred seventy-three".