145273407 has 8 divisors (see below), whose sum is σ = 193777584. Its totient is φ = 96809088.

The previous prime is 145273397. The next prime is 145273423. The reversal of 145273407 is 704372541.

145273407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 145273407 - 2⁶ = 145273343 is a prime.

It is a super-2 number, since 2×145273407² = 42208725562775298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145275407) 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, 48 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (24222198).

Almost surely, 2^145273407 is an apocalyptic number.

145273407 is a deficient number, since it is larger than the sum of its proper divisors (48504177).

145273407 is a wasteful number, since it uses less digits than its factorization.

145273407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19929.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 145273407 is about 12052.9418400654. The cubic root of 145273407 is about 525.6887794000.

The spelling of 145273407 in words is "one hundred forty-five million, two hundred seventy-three thousand, four hundred seven".