55507471 has 2 divisors, whose sum is σ = 55507472. Its totient is φ = 55507470.

The previous prime is 55507433. The next prime is 55507489. The reversal of 55507471 is 17470555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55507471 - 2¹⁹ = 54983183 is a prime.

It is a super-3 number, since 3×55507471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55507411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27753735 + 27753736.

It is an arithmetic number, because the mean of its divisors is an integer number (27753736).

Almost surely, 2^55507471 is an apocalyptic number.

55507471 is a deficient number, since it is larger than the sum of its proper divisors (1).

55507471 is an equidigital number, since it uses as much as digits as its factorization.

55507471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 55507471 is about 7450.3336166913. Note that the first 3 decimals coincide. The cubic root of 55507471 is about 381.4612962573.

The spelling of 55507471 in words is "fifty-five million, five hundred seven thousand, four hundred seventy-one".