145100047 has 2 divisors, whose sum is σ = 145100048. Its totient is φ = 145100046.

The previous prime is 145100041. The next prime is 145100071. The reversal of 145100047 is 740001541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145100047 - 2⁷ = 145099919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145100041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72550023 + 72550024.

It is an arithmetic number, because the mean of its divisors is an integer number (72550024).

Almost surely, 2^145100047 is an apocalyptic number.

145100047 is a deficient number, since it is larger than the sum of its proper divisors (1).

145100047 is an equidigital number, since it uses as much as digits as its factorization.

145100047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 145100047 is about 12045.7480880184. The cubic root of 145100047 is about 525.4795883680.

Adding to 145100047 its reverse (740001541), we get a palindrome (885101588).

The spelling of 145100047 in words is "one hundred forty-five million, one hundred thousand, forty-seven".