145933047 has 12 divisors (see below), whose sum is σ = 227007144. Its totient is φ = 89804880.

The previous prime is 145933043. The next prime is 145933057. The reversal of 145933047 is 740339541.

It is not a de Polignac number, because 145933047 - 2² = 145933043 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145933043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623529 + ... + 623762.

It is an arithmetic number, because the mean of its divisors is an integer number (18917262).

Almost surely, 2^145933047 is an apocalyptic number.

145933047 is a deficient number, since it is larger than the sum of its proper divisors (81074097).

145933047 is a wasteful number, since it uses less digits than its factorization.

145933047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247310 (or 1247307 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 145933047 is about 12080.2751210393. The cubic root of 145933047 is about 526.4832395917.

The spelling of 145933047 in words is "one hundred forty-five million, nine hundred thirty-three thousand, forty-seven".