51158085 has 16 divisors (see below), whose sum is σ = 89294400. Its totient is φ = 24803840.

The previous prime is 51158071. The next prime is 51158099. The reversal of 51158085 is 58085115.

It is an interprime number because it is at equal distance from previous prime (51158071) and next prime (51158099).

It is not a de Polignac number, because 51158085 - 2¹² = 51153989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154860 + ... + 155189.

It is an arithmetic number, because the mean of its divisors is an integer number (5580900).

Almost surely, 2^51158085 is an apocalyptic number.

51158085 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51158085 is a deficient number, since it is larger than the sum of its proper divisors (38136315).

51158085 is a wasteful number, since it uses less digits than its factorization.

51158085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310068.

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 51158085 is about 7152.4880286513. The cubic root of 51158085 is about 371.2257497566.

The spelling of 51158085 in words is "fifty-one million, one hundred fifty-eight thousand, eighty-five".