145245351 has 4 divisors (see below), whose sum is σ = 193660472. Its totient is φ = 96830232.

The previous prime is 145245343. The next prime is 145245379. The reversal of 145245351 is 153542541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145245351 - 2³ = 145245343 is a prime.

It is a super-2 number, since 2×145245351² = 42192423974226402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145245301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24207556 + ... + 24207561.

It is an arithmetic number, because the mean of its divisors is an integer number (48415118).

Almost surely, 2^145245351 is an apocalyptic number.

145245351 is a deficient number, since it is larger than the sum of its proper divisors (48415121).

145245351 is an equidigital number, since it uses as much as digits as its factorization.

145245351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48415120.

The product of its digits is 12000, while the sum is 30.

The square root of 145245351 is about 12051.7779186309. Note that the first 3 decimals coincide. The cubic root of 145245351 is about 525.6549359177.

Adding to 145245351 its reverse (153542541), we get a palindrome (298787892).

The spelling of 145245351 in words is "one hundred forty-five million, two hundred forty-five thousand, three hundred fifty-one".