145331507 has 2 divisors, whose sum is σ = 145331508. Its totient is φ = 145331506.

The previous prime is 145331497. The next prime is 145331569. The reversal of 145331507 is 705133541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145331507 - 2¹⁸ = 145069363 is a prime.

It is a super-2 number, since 2×145331507² = 42242493853782098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145331507.

It is not a weakly prime, because it can be changed into another prime (145334507) 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 as a sum of consecutive naturals, namely, 72665753 + 72665754.

It is an arithmetic number, because the mean of its divisors is an integer number (72665754).

Almost surely, 2^145331507 is an apocalyptic number.

145331507 is a deficient number, since it is larger than the sum of its proper divisors (1).

145331507 is an equidigital number, since it uses as much as digits as its factorization.

145331507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 145331507 is about 12055.3517990974. The cubic root of 145331507 is about 525.7588506033.

The spelling of 145331507 in words is "one hundred forty-five million, three hundred thirty-one thousand, five hundred seven".