55581170 has 8 divisors (see below), whose sum is σ = 100046124. Its totient is φ = 22232464.

The previous prime is 55581167. The next prime is 55581173. The reversal of 55581170 is 7118555.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55581167) and next prime (55581173).

It can be written as a sum of positive squares in 2 ways, for example, as 53919649 + 1661521 = 7343^2 + 1289^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55581173) 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, 2779049 + ... + 2779068.

Almost surely, 2^55581170 is an apocalyptic number.

55581170 is a deficient number, since it is larger than the sum of its proper divisors (44464954).

55581170 is a wasteful number, since it uses less digits than its factorization.

55581170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558124.

The product of its (nonzero) digits is 7000, while the sum is 32.

The square root of 55581170 is about 7455.2779961582. The cubic root of 55581170 is about 381.6300476129.

The spelling of 55581170 in words is "fifty-five million, five hundred eighty-one thousand, one hundred seventy".