145591651 has 2 divisors, whose sum is σ = 145591652. Its totient is φ = 145591650.

The previous prime is 145591631. The next prime is 145591703. The reversal of 145591651 is 156195541.

145591651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145591651 - 2¹¹ = 145589603 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145591651.

It is not a weakly prime, because it can be changed into another prime (145591631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72795825 + 72795826.

It is an arithmetic number, because the mean of its divisors is an integer number (72795826).

Almost surely, 2^145591651 is an apocalyptic number.

145591651 is a deficient number, since it is larger than the sum of its proper divisors (1).

145591651 is an equidigital number, since it uses as much as digits as its factorization.

145591651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 37.

The square root of 145591651 is about 12066.1365399203. The cubic root of 145591651 is about 526.0723671197.

The spelling of 145591651 in words is "one hundred forty-five million, five hundred ninety-one thousand, six hundred fifty-one".