145247711 has 12 divisors (see below), whose sum is σ = 178901568. Its totient is φ = 117173952.

The previous prime is 145247701. The next prime is 145247777. The reversal of 145247711 is 117742541.

It is not a de Polignac number, because 145247711 - 2¹⁸ = 144985567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145247701) 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, 86351 + ... + 88016.

It is an arithmetic number, because the mean of its divisors is an integer number (14908464).

Almost surely, 2^145247711 is an apocalyptic number.

145247711 is a deficient number, since it is larger than the sum of its proper divisors (33653857).

145247711 is a wasteful number, since it uses less digits than its factorization.

145247711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174398 (or 174391 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 145247711 is about 12051.8758290981. The cubic root of 145247711 is about 525.6577829139.

The spelling of 145247711 in words is "one hundred forty-five million, two hundred forty-seven thousand, seven hundred eleven".