145031454 has 48 divisors (see below), whose sum is σ = 343474560. Its totient is φ = 44029440.

The previous prime is 145031443. The next prime is 145031477. The reversal of 145031454 is 454130541.

It is a happy number.

145031454 is a `hidden beast` number, since 14 + 503 + 145 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1842 + ... + 17130.

It is an arithmetic number, because the mean of its divisors is an integer number (7155720).

Almost surely, 2^145031454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145031454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171737280).

145031454 is an abundant number, since it is smaller than the sum of its proper divisors (198443106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145031454 is a wasteful number, since it uses less digits than its factorization.

145031454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345 (or 15342 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 145031454 is about 12042.9005642329. The cubic root of 145031454 is about 525.3967721701.

Adding to 145031454 its reverse (454130541), we get a palindrome (599161995).

The spelling of 145031454 in words is "one hundred forty-five million, thirty-one thousand, four hundred fifty-four".