145729657 has 8 divisors (see below), whose sum is σ = 150627456. Its totient is φ = 140906832.

The previous prime is 145729651. The next prime is 145729693. The reversal of 145729657 is 756927541.

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

It is a cyclic number.

It is not a de Polignac number, because 145729657 - 2²³ = 137341049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145729651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14778 + ... + 22579.

It is an arithmetic number, because the mean of its divisors is an integer number (18828432).

Almost surely, 2^145729657 is an apocalyptic number.

It is an amenable number.

145729657 is a deficient number, since it is larger than the sum of its proper divisors (4897799).

145729657 is an equidigital number, since it uses as much as digits as its factorization.

145729657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37487.

The product of its digits is 529200, while the sum is 46.

The square root of 145729657 is about 12071.8539172739. The cubic root of 145729657 is about 526.2385355668.

The spelling of 145729657 in words is "one hundred forty-five million, seven hundred twenty-nine thousand, six hundred fifty-seven".