51098381 has 8 divisors (see below), whose sum is σ = 51675744. Its totient is φ = 50524560.

The previous prime is 51098363. The next prime is 51098401. The reversal of 51098381 is 18389015.

51098381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51098381 - 2⁶ = 51098317 is a prime.

It is a super-2 number, since 2×51098381² = 5222089081642322, 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 (51098351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36311 + ... + 37691.

It is an arithmetic number, because the mean of its divisors is an integer number (6459468).

Almost surely, 2^51098381 is an apocalyptic number.

It is an amenable number.

51098381 is a deficient number, since it is larger than the sum of its proper divisors (577363).

51098381 is a wasteful number, since it uses less digits than its factorization.

51098381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 51098381 is about 7148.3131576617. The cubic root of 51098381 is about 371.0812806416.

The spelling of 51098381 in words is "fifty-one million, ninety-eight thousand, three hundred eighty-one".