51001512 has 32 divisors (see below), whose sum is σ = 127932480. Its totient is φ = 16943360.

The previous prime is 51001493. The next prime is 51001519. The reversal of 51001512 is 21510015.

It is a super-2 number, since 2×51001512² = 5202308452572288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51001491 and 51001500.

It is not an unprimeable number, because it can be changed into a prime (51001519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4048 + ... + 10880.

It is an arithmetic number, because the mean of its divisors is an integer number (3997890).

Almost surely, 2^51001512 is an apocalyptic number.

It is an amenable number.

51001512 is an abundant number, since it is smaller than the sum of its proper divisors (76930968).

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

51001512 is a wasteful number, since it uses less digits than its factorization.

51001512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153 (or 7149 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 51001512 is about 7141.5342889326. The cubic root of 51001512 is about 370.8466416916.

Adding to 51001512 its reverse (21510015), we get a palindrome (72511527).

The spelling of 51001512 in words is "fifty-one million, one thousand, five hundred twelve".