145552473 has 18 divisors (see below), whose sum is σ = 231094682. Its totient is φ = 88212960.

The previous prime is 145552457. The next prime is 145552481. The reversal of 145552473 is 374255541.

145552473 is a `hidden beast` number, since 14 + 55 + 524 + 73 = 666.

145552473 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 only one way, i.e., 74183769 + 71368704 = 8613^2 + 8448^2 .

It is not a de Polignac number, because 145552473 - 2⁴ = 145552457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145552873) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 65740 + ... + 67917.

Almost surely, 2^145552473 is an apocalyptic number.

It is an amenable number.

145552473 is a deficient number, since it is larger than the sum of its proper divisors (85542209).

145552473 is a wasteful number, since it uses less digits than its factorization.

145552473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133685 (or 133671 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 145552473 is about 12064.5129615745. The cubic root of 145552473 is about 526.0251750542.

The spelling of 145552473 in words is "one hundred forty-five million, five hundred fifty-two thousand, four hundred seventy-three".