145553687 has 2 divisors, whose sum is σ = 145553688. Its totient is φ = 145553686.

The previous prime is 145553669. The next prime is 145553743. The reversal of 145553687 is 786355541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145553687 - 2⁸ = 145553431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145553627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72776843 + 72776844.

It is an arithmetic number, because the mean of its divisors is an integer number (72776844).

Almost surely, 2^145553687 is an apocalyptic number.

145553687 is a deficient number, since it is larger than the sum of its proper divisors (1).

145553687 is an equidigital number, since it uses as much as digits as its factorization.

145553687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504000, while the sum is 44.

The square root of 145553687 is about 12064.5632743171. The cubic root of 145553687 is about 526.0266375114.

The spelling of 145553687 in words is "one hundred forty-five million, five hundred fifty-three thousand, six hundred eighty-seven".