145705497 has 8 divisors (see below), whose sum is σ = 222027456. Its totient is φ = 83260272.

The previous prime is 145705493. The next prime is 145705501. The reversal of 145705497 is 794507541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145705493) and next prime (145705501).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145705497 - 2² = 145705493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145705493) 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 in 7 ways as a sum of consecutive naturals, for example, 3469158 + ... + 3469199.

It is an arithmetic number, because the mean of its divisors is an integer number (27753432).

Almost surely, 2^145705497 is an apocalyptic number.

It is an amenable number.

145705497 is a deficient number, since it is larger than the sum of its proper divisors (76321959).

145705497 is an equidigital number, since it uses as much as digits as its factorization.

145705497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938367.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 145705497 is about 12070.8532009962. The cubic root of 145705497 is about 526.2094528897.

The spelling of 145705497 in words is "one hundred forty-five million, seven hundred five thousand, four hundred ninety-seven".