145451657 has 8 divisors (see below), whose sum is σ = 157463040. Its totient is φ = 133557840.

The previous prime is 145451639. The next prime is 145451689. The reversal of 145451657 is 756154541.

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

It is not a de Polignac number, because 145451657 - 2¹⁶ = 145386121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145451657.

It is not an unprimeable number, because it can be changed into a prime (145451357) 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, 26807 + ... + 31772.

It is an arithmetic number, because the mean of its divisors is an integer number (19682880).

Almost surely, 2^145451657 is an apocalyptic number.

It is an amenable number.

145451657 is a deficient number, since it is larger than the sum of its proper divisors (12011383).

145451657 is a wasteful number, since it uses less digits than its factorization.

145451657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58783.

The product of its digits is 84000, while the sum is 38.

The square root of 145451657 is about 12060.3340335167. The cubic root of 145451657 is about 525.9036976660.

The spelling of 145451657 in words is "one hundred forty-five million, four hundred fifty-one thousand, six hundred fifty-seven".