145211451 has 32 divisors (see below), whose sum is σ = 246336000. Its totient is φ = 75428640.

The previous prime is 145211447. The next prime is 145211453. The reversal of 145211451 is 154112541.

It is not a de Polignac number, because 145211451 - 2² = 145211447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145211453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4905 + ... + 17733.

It is an arithmetic number, because the mean of its divisors is an integer number (7698000).

Almost surely, 2^145211451 is an apocalyptic number.

145211451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145211451 is a deficient number, since it is larger than the sum of its proper divisors (101124549).

145211451 is a wasteful number, since it uses less digits than its factorization.

145211451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864 (or 12850 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 145211451 is about 12050.3714050647. The cubic root of 145211451 is about 525.6140371012.

Adding to 145211451 its reverse (154112541), we get a palindrome (299323992).

The spelling of 145211451 in words is "one hundred forty-five million, two hundred eleven thousand, four hundred fifty-one".