55651066 has 8 divisors (see below), whose sum is σ = 83513664. Its totient is φ = 27813180.

The previous prime is 55651061. The next prime is 55651069. The reversal of 55651066 is 66015655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55651066² = 6194082293872712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55651061) 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, 1231 + ... + 10621.

It is an arithmetic number, because the mean of its divisors is an integer number (10439208).

Almost surely, 2^55651066 is an apocalyptic number.

55651066 is a deficient number, since it is larger than the sum of its proper divisors (27862598).

55651066 is a wasteful number, since it uses less digits than its factorization.

55651066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12356.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55651066 is about 7459.9642090294. The cubic root of 55651066 is about 381.7899533278.

It can be divided in two parts, 5565 and 1066, that multiplied together give a triangular number (5932290 = T₃₄₄₄).

The spelling of 55651066 in words is "fifty-five million, six hundred fifty-one thousand, sixty-six".