145810451 has 4 divisors (see below), whose sum is σ = 149751312. Its totient is φ = 141869592.

The previous prime is 145810439. The next prime is 145810459. The reversal of 145810451 is 154018541.

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

It is a cyclic number.

It is not a de Polignac number, because 145810451 - 2¹⁸ = 145548307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145810459) 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, 1970375 + ... + 1970448.

It is an arithmetic number, because the mean of its divisors is an integer number (37437828).

Almost surely, 2^145810451 is an apocalyptic number.

145810451 is a deficient number, since it is larger than the sum of its proper divisors (3940861).

145810451 is an equidigital number, since it uses as much as digits as its factorization.

145810451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940860.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 145810451 is about 12075.1998327150. The cubic root of 145810451 is about 526.3357682607.

Adding to 145810451 its reverse (154018541), we get a palindrome (299828992).

The spelling of 145810451 in words is "one hundred forty-five million, eight hundred ten thousand, four hundred fifty-one".