66058551 has 48 divisors (see below), whose sum is σ = 109624320. Its totient is φ = 39255840.

The previous prime is 66058541. The next prime is 66058567. The reversal of 66058551 is 15585066.

It is not a de Polignac number, because 66058551 - 2¹⁴ = 66042167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66058541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141220 + ... + 141686.

It is an arithmetic number, because the mean of its divisors is an integer number (2283840).

Almost surely, 2^66058551 is an apocalyptic number.

66058551 is a deficient number, since it is larger than the sum of its proper divisors (43565769).

66058551 is a wasteful number, since it uses less digits than its factorization.

66058551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 66058551 is about 8127.6411707211. The cubic root of 66058551 is about 404.2434711066.

The spelling of 66058551 in words is "sixty-six million, fifty-eight thousand, five hundred fifty-one".