145405450 has 24 divisors (see below), whose sum is σ = 272259360. Its totient is φ = 57774000.

The previous prime is 145405367. The next prime is 145405457. The reversal of 145405450 is 54504541.

It is a super-2 number, since 2×145405450² = 42285489779405000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145405457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2080 + ... + 17179.

It is an arithmetic number, because the mean of its divisors is an integer number (11344140).

Almost surely, 2^145405450 is an apocalyptic number.

145405450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145405450 is a deficient number, since it is larger than the sum of its proper divisors (126853910).

145405450 is a wasteful number, since it uses less digits than its factorization.

145405450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19422 (or 19417 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 145405450 is about 12058.4182213091. The cubic root of 145405450 is about 525.8480021715.

Adding to 145405450 its reverse (54504541), we get a palindrome (199909991).

Subtracting from 145405450 its reverse (54504541), we obtain a palindrome (90900909).

The spelling of 145405450 in words is "one hundred forty-five million, four hundred five thousand, four hundred fifty".