145202471 has 2 divisors, whose sum is σ = 145202472. Its totient is φ = 145202470.

The previous prime is 145202461. The next prime is 145202557. The reversal of 145202471 is 174202541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145202471 is a prime.

It is a super-3 number, since 3×145202471³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145202471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145202461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72601235 + 72601236.

It is an arithmetic number, because the mean of its divisors is an integer number (72601236).

Almost surely, 2^145202471 is an apocalyptic number.

145202471 is a deficient number, since it is larger than the sum of its proper divisors (1).

145202471 is an equidigital number, since it uses as much as digits as its factorization.

145202471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 145202471 is about 12049.9987966804. The cubic root of 145202471 is about 525.6032020710.

The spelling of 145202471 in words is "one hundred forty-five million, two hundred two thousand, four hundred seventy-one".