145151973 has 8 divisors (see below), whose sum is σ = 215040000. Its totient is φ = 96767964.

The previous prime is 145151971. The next prime is 145151987. The reversal of 145151973 is 379151541.

It is a happy number.

It is not a de Polignac number, because 145151973 - 2¹ = 145151971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145151971) 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, 2687973 + ... + 2688026.

It is an arithmetic number, because the mean of its divisors is an integer number (26880000).

Almost surely, 2^145151973 is an apocalyptic number.

It is an amenable number.

145151973 is a deficient number, since it is larger than the sum of its proper divisors (69888027).

145151973 is an equidigital number, since it uses as much as digits as its factorization.

145151973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376008 (or 5376002 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 145151973 is about 12047.9032615638. The cubic root of 145151973 is about 525.5422642008.

The spelling of 145151973 in words is "one hundred forty-five million, one hundred fifty-one thousand, nine hundred seventy-three".