55751515 has 8 divisors (see below), whose sum is σ = 67708368. Its totient is φ = 44063520.

The previous prime is 55751497. The next prime is 55751533. The reversal of 55751515 is 51515755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55751497) and next prime (55751533).

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

It is not a de Polignac number, because 55751515 - 2²³ = 47362907 is a prime.

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, 66756 + ... + 67585.

It is an arithmetic number, because the mean of its divisors is an integer number (8463546).

Almost surely, 2^55751515 is an apocalyptic number.

55751515 is a deficient number, since it is larger than the sum of its proper divisors (11956853).

55751515 is a wasteful number, since it uses less digits than its factorization.

55751515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134429.

The product of its digits is 21875, while the sum is 34.

The square root of 55751515 is about 7466.6937127486. The cubic root of 55751515 is about 382.0195228640.

The spelling of 55751515 in words is "fifty-five million, seven hundred fifty-one thousand, five hundred fifteen".