145451437 has 2 divisors, whose sum is σ = 145451438. Its totient is φ = 145451436.

The previous prime is 145451399. The next prime is 145451459. The reversal of 145451437 is 734154541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142420356 + 3031081 = 11934^2 + 1741^2 .

It is an emirp because it is prime and its reverse (734154541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145451437 is a prime.

It is a super-2 number, since 2×145451437² = 42312241050729938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145451497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72725718 + 72725719.

It is an arithmetic number, because the mean of its divisors is an integer number (72725719).

Almost surely, 2^145451437 is an apocalyptic number.

It is an amenable number.

145451437 is a deficient number, since it is larger than the sum of its proper divisors (1).

145451437 is an equidigital number, since it uses as much as digits as its factorization.

145451437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 145451437 is about 12060.3249127045. The cubic root of 145451437 is about 525.9034325175.

The spelling of 145451437 in words is "one hundred forty-five million, four hundred fifty-one thousand, four hundred thirty-seven".