54527509 has 2 divisors, whose sum is σ = 54527510. Its totient is φ = 54527508.

The previous prime is 54527489. The next prime is 54527519. The reversal of 54527509 is 90572545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34187409 + 20340100 = 5847^2 + 4510^2 .

It is a cyclic number.

It is not a de Polignac number, because 54527509 - 2⁵ = 54527477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54527519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27263754 + 27263755.

It is an arithmetic number, because the mean of its divisors is an integer number (27263755).

Almost surely, 2^54527509 is an apocalyptic number.

It is an amenable number.

54527509 is a deficient number, since it is larger than the sum of its proper divisors (1).

54527509 is an equidigital number, since it uses as much as digits as its factorization.

54527509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 54527509 is about 7384.2744396454. The cubic root of 54527509 is about 379.2031060955.

The spelling of 54527509 in words is "fifty-four million, five hundred twenty-seven thousand, five hundred nine".