145771256 has 8 divisors (see below), whose sum is σ = 273321120. Its totient is φ = 72885624.

The previous prime is 145771201. The next prime is 145771271. The reversal of 145771256 is 652177541.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9110696 + ... + 9110711.

It is an arithmetic number, because the mean of its divisors is an integer number (34165140).

Almost surely, 2^145771256 is an apocalyptic number.

It is an amenable number.

145771256 is a deficient number, since it is larger than the sum of its proper divisors (127549864).

145771256 is a wasteful number, since it uses less digits than its factorization.

145771256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18221413 (or 18221409 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 145771256 is about 12073.5767691269. The cubic root of 145771256 is about 526.2886029648.

The spelling of 145771256 in words is "one hundred forty-five million, seven hundred seventy-one thousand, two hundred fifty-six".