55089155 has 8 divisors (see below), whose sum is σ = 72116784. Its totient is φ = 40064800.

The previous prime is 55089121. The next prime is 55089169. The reversal of 55089155 is 55198055.

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

It is not a de Polignac number, because 55089155 - 2⁶ = 55089091 is a prime.

It is a super-2 number, since 2×55089155² = 6069629997228050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500756 + ... + 500865.

It is an arithmetic number, because the mean of its divisors is an integer number (9014598).

Almost surely, 2^55089155 is an apocalyptic number.

55089155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55089155 is a deficient number, since it is larger than the sum of its proper divisors (17027629).

55089155 is a wasteful number, since it uses less digits than its factorization.

55089155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001637.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 55089155 is about 7422.2068820533. The cubic root of 55089155 is about 380.5006213429.

Subtracting 55089155 from its reverse (55198055), we obtain a square (108900 = 330²).

The spelling of 55089155 in words is "fifty-five million, eighty-nine thousand, one hundred fifty-five".