545526261 has 72 divisors (see below), whose sum is σ = 957372000. Its totient is φ = 298178496.

The previous prime is 545526253. The next prime is 545526269. The reversal of 545526261 is 162625545.

545526261 is a `hidden beast` number, since 545 + 52 + 6 + 2 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (545526253) and next prime (545526269).

It is not a de Polignac number, because 545526261 - 2³ = 545526253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545526269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1092990 + ... + 1093488.

Almost surely, 2^545526261 is an apocalyptic number.

It is an amenable number.

545526261 is a deficient number, since it is larger than the sum of its proper divisors (411845739).

545526261 is a wasteful number, since it uses less digits than its factorization.

545526261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 613 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 545526261 is about 23356.5036124845. The cubic root of 545526261 is about 817.0937475915.

The spelling of 545526261 in words is "five hundred forty-five million, five hundred twenty-six thousand, two hundred sixty-one".