145318251 has 16 divisors (see below), whose sum is σ = 219645440. Its totient is φ = 84719520.

The previous prime is 145318237. The next prime is 145318259. The reversal of 145318251 is 152813541.

It is not a de Polignac number, because 145318251 - 2⁷ = 145318123 is a prime.

It is a super-2 number, since 2×145318251² = 42234788147398002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145318259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97315 + ... + 98796.

It is an arithmetic number, because the mean of its divisors is an integer number (13727840).

Almost surely, 2^145318251 is an apocalyptic number.

145318251 is a deficient number, since it is larger than the sum of its proper divisors (74327189).

145318251 is a wasteful number, since it uses less digits than its factorization.

145318251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196146.

The product of its digits is 4800, while the sum is 30.

The square root of 145318251 is about 12054.8019892489. The cubic root of 145318251 is about 525.7428649179.

The spelling of 145318251 in words is "one hundred forty-five million, three hundred eighteen thousand, two hundred fifty-one".