145451656 has 64 divisors (see below), whose sum is σ = 318689280. Its totient is φ = 60955200.

The previous prime is 145451639. The next prime is 145451689. The reversal of 145451656 is 656154541.

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870885 + ... + 871051.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^145451656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145451656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159344640).

145451656 is an abundant number, since it is smaller than the sum of its proper divisors (173237624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145451656 is a wasteful number, since it uses less digits than its factorization.

145451656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 430 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 145451656 is about 12060.3339920584. Note that the first 3 decimals coincide. The cubic root of 145451656 is about 525.9036964608.

The spelling of 145451656 in words is "one hundred forty-five million, four hundred fifty-one thousand, six hundred fifty-six".