55061871 has 4 divisors (see below), whose sum is σ = 73415832. Its totient is φ = 36707912.

The previous prime is 55061869. The next prime is 55061899. The reversal of 55061871 is 17816055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55061871 - 2¹ = 55061869 is a prime.

It is a super-3 number, since 3×55061871³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55061821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9176976 + ... + 9176981.

It is an arithmetic number, because the mean of its divisors is an integer number (18353958).

Almost surely, 2^55061871 is an apocalyptic number.

55061871 is a deficient number, since it is larger than the sum of its proper divisors (18353961).

55061871 is a wasteful number, since it uses less digits than its factorization.

55061871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353960.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 55061871 is about 7420.3686566100. The cubic root of 55061871 is about 380.4377941354.

The spelling of 55061871 in words is "fifty-five million, sixty-one thousand, eight hundred seventy-one".