145621183 has 2 divisors, whose sum is σ = 145621184. Its totient is φ = 145621182.

The previous prime is 145621171. The next prime is 145621237. The reversal of 145621183 is 381126541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145621183 is a prime.

It is equal to p_8211586 and since 145621183 and 8211586 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145621123) 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, 72810591 + 72810592.

It is an arithmetic number, because the mean of its divisors is an integer number (72810592).

Almost surely, 2^145621183 is an apocalyptic number.

145621183 is a deficient number, since it is larger than the sum of its proper divisors (1).

145621183 is an equidigital number, since it uses as much as digits as its factorization.

145621183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 145621183 is about 12067.3602332905. The cubic root of 145621183 is about 526.1079344495.

The spelling of 145621183 in words is "one hundred forty-five million, six hundred twenty-one thousand, one hundred eighty-three".