145320254 has 8 divisors (see below), whose sum is σ = 218639928. Its totient is φ = 72440280.

The previous prime is 145320251. The next prime is 145320269. The reversal of 145320254 is 452023541.

It is a happy number.

145320254 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 super-2 number, since 2×145320254² = 42235952445249032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145320251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109097 + ... + 110420.

It is an arithmetic number, because the mean of its divisors is an integer number (27329991).

Almost surely, 2^145320254 is an apocalyptic number.

145320254 is a deficient number, since it is larger than the sum of its proper divisors (73319674).

145320254 is a wasteful number, since it uses less digits than its factorization.

145320254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219850.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 145320254 is about 12054.8850678885. The cubic root of 145320254 is about 525.7452804395.

Adding to 145320254 its reverse (452023541), we get a palindrome (597343795).

The spelling of 145320254 in words is "one hundred forty-five million, three hundred twenty thousand, two hundred fifty-four".