51098002550 has 24 divisors (see below), whose sum is σ = 108619754736. Its totient is φ = 17519315040.

The previous prime is 51098002541. The next prime is 51098002559. The reversal of 51098002550 is 5520089015.

It is an interprime number because it is at equal distance from previous prime (51098002541) and next prime (51098002559).

It is a super-2 number, since 2×51098002550² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 51098002550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51098002559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72996797 + ... + 72997496.

It is an arithmetic number, because the mean of its divisors is an integer number (4525823114).

Almost surely, 2^51098002550 is an apocalyptic number.

51098002550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51098002550 is an abundant number, since it is smaller than the sum of its proper divisors (57521752186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51098002550 is a wasteful number, since it uses less digits than its factorization.

51098002550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145994312 (or 145994307 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 51098002550 in words is "fifty-one billion, ninety-eight million, two thousand, five hundred fifty".