145546657 has 8 divisors (see below), whose sum is σ = 147287336. Its totient is φ = 143811072.

The previous prime is 145546637. The next prime is 145546697. The reversal of 145546657 is 756645541.

145546657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6330256 + 139216401 = 2516^2 + 11799^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145546657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145546607) 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, 117043 + ... + 118279.

It is an arithmetic number, because the mean of its divisors is an integer number (18410917).

Almost surely, 2^145546657 is an apocalyptic number.

It is an amenable number.

145546657 is a deficient number, since it is larger than the sum of its proper divisors (1740679).

145546657 is a wasteful number, since it uses less digits than its factorization.

145546657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547.

The product of its digits is 504000, while the sum is 43.

The square root of 145546657 is about 12064.2719216702. The cubic root of 145546657 is about 526.0181686390.

The spelling of 145546657 in words is "one hundred forty-five million, five hundred forty-six thousand, six hundred fifty-seven".