145715251 has 8 divisors (see below), whose sum is σ = 159090624. Its totient is φ = 132361320.

The previous prime is 145715239. The next prime is 145715291. The reversal of 145715251 is 152517541.

145715251 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 a cyclic number.

It is not a de Polignac number, because 145715251 - 2⁹ = 145714739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145715201) 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, 11056 + ... + 20338.

It is an arithmetic number, because the mean of its divisors is an integer number (19886328).

Almost surely, 2^145715251 is an apocalyptic number.

145715251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145715251 is a deficient number, since it is larger than the sum of its proper divisors (13375373).

145715251 is a wasteful number, since it uses less digits than its factorization.

145715251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10721.

The product of its digits is 7000, while the sum is 31.

The square root of 145715251 is about 12071.2572253266. The cubic root of 145715251 is about 526.2211946853.

The spelling of 145715251 in words is "one hundred forty-five million, seven hundred fifteen thousand, two hundred fifty-one".