145807461 has 6 divisors (see below), whose sum is σ = 210610790. Its totient is φ = 97204968.

The previous prime is 145807427. The next prime is 145807471. The reversal of 145807461 is 164708541.

It is a happy number.

145807461 is a `hidden beast` number, since 1 + 4 + 580 + 74 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 39614436 = 10305^2 + 6294^2 .

It is not a de Polignac number, because 145807461 - 2⁶ = 145807397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145807411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8100406 + ... + 8100423.

Almost surely, 2^145807461 is an apocalyptic number.

It is an amenable number.

145807461 is a deficient number, since it is larger than the sum of its proper divisors (64803329).

145807461 is a wasteful number, since it uses less digits than its factorization.

145807461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200835 (or 16200832 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 145807461 is about 12075.0760246054. The cubic root of 145807461 is about 526.3321705426.

The spelling of 145807461 in words is "one hundred forty-five million, eight hundred seven thousand, four hundred sixty-one".