55132646 has 4 divisors (see below), whose sum is σ = 82698972. Its totient is φ = 27566322.

The previous prime is 55132603. The next prime is 55132673. The reversal of 55132646 is 64623155.

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

It is a super-2 number, since 2×55132646² = 6079217309922632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13783160 + ... + 13783163.

It is an arithmetic number, because the mean of its divisors is an integer number (20674743).

Almost surely, 2^55132646 is an apocalyptic number.

55132646 is a deficient number, since it is larger than the sum of its proper divisors (27566326).

55132646 is a wasteful number, since it uses less digits than its factorization.

55132646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27566325.

The product of its digits is 21600, while the sum is 32.

The square root of 55132646 is about 7425.1360930289. The cubic root of 55132646 is about 380.6007257382.

The spelling of 55132646 in words is "fifty-five million, one hundred thirty-two thousand, six hundred forty-six".