145781476 has 9 divisors (see below), whose sum is σ = 255159849. Its totient is φ = 72878664.

The previous prime is 145781453. The next prime is 145781483. The reversal of 145781476 is 674187541.

The square root of 145781476 is 12074.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 117158976 = 5350^2 + 10824^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21130 + ... + 27166.

Almost surely, 2^145781476 is an apocalyptic number.

145781476 is the 12074-th square number.

It is an amenable number.

145781476 is a deficient number, since it is larger than the sum of its proper divisors (109378373).

145781476 is an frugal number, since it uses more digits than its factorization.

145781476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12078 (or 6039 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The cubic root of 145781476 is about 526.3009020147.

The spelling of 145781476 in words is "one hundred forty-five million, seven hundred eighty-one thousand, four hundred seventy-six".