55143015 has 8 divisors (see below), whose sum is σ = 88228848. Its totient is φ = 29409600.

The previous prime is 55142999. The next prime is 55143041. The reversal of 55143015 is 51034155.

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

It is not a de Polignac number, because 55143015 - 2⁴ = 55142999 is a prime.

It is a congruent 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, 1838086 + ... + 1838115.

It is an arithmetic number, because the mean of its divisors is an integer number (11028606).

Almost surely, 2^55143015 is an apocalyptic number.

55143015 is a deficient number, since it is larger than the sum of its proper divisors (33085833).

55143015 is a wasteful number, since it uses less digits than its factorization.

55143015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676209.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55143015 is about 7425.8342965622. The cubic root of 55143015 is about 380.6245845698.

The spelling of 55143015 in words is "fifty-five million, one hundred forty-three thousand, fifteen".