51129426 has 16 divisors (see below), whose sum is σ = 102492000. Its totient is φ = 17004288.

The previous prime is 51129401. The next prime is 51129433. The reversal of 51129426 is 62492115.

It is a super-2 number, since 2×51129426² = 5228436406178952, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51129393 and 51129402.

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, 6796 + ... + 12183.

It is an arithmetic number, because the mean of its divisors is an integer number (6405750).

Almost surely, 2^51129426 is an apocalyptic number.

51129426 is an abundant number, since it is smaller than the sum of its proper divisors (51362574).

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

51129426 is a wasteful number, since it uses less digits than its factorization.

51129426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19433.

The product of its digits is 4320, while the sum is 30.

The square root of 51129426 is about 7150.4843192612. The cubic root of 51129426 is about 371.1564160038.

The spelling of 51129426 in words is "fifty-one million, one hundred twenty-nine thousand, four hundred twenty-six".