55005501 has 8 divisors (see below), whose sum is σ = 75706624. Its totient is φ = 35487360.

The previous prime is 55005481. The next prime is 55005521. The reversal of 55005501 is 10550055.

It is an interprime number because it is at equal distance from previous prime (55005481) and next prime (55005521).

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

It is not a de Polignac number, because 55005501 - 2¹³ = 54997309 is a prime.

It is a super-2 number, since 2×55005501² = 6051210280522002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295636 + ... + 295821.

It is an arithmetic number, because the mean of its divisors is an integer number (9463328).

Almost surely, 2^55005501 is an apocalyptic number.

It is an amenable number.

55005501 is a deficient number, since it is larger than the sum of its proper divisors (20701123).

55005501 is a wasteful number, since it uses less digits than its factorization.

55005501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591491.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 55005501 is about 7416.5693551668. The cubic root of 55005501 is about 380.3079244665.

Adding to 55005501 its reverse (10550055), we get a palindrome (65555556).

The spelling of 55005501 in words is "fifty-five million, five thousand, five hundred one".