51050040 has 32 divisors (see below), whose sum is σ = 153150480. Its totient is φ = 13613312.

The previous prime is 51050029. The next prime is 51050053. The reversal of 51050040 is 4005015.

51050040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51050040² = 5212213168003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

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, 212589 + ... + 212828.

Almost surely, 2^51050040 is an apocalyptic number.

It is an amenable number.

51050040 is an abundant number, since it is smaller than the sum of its proper divisors (102100440).

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

51050040 is a wasteful number, since it uses less digits than its factorization.

51050040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425431 (or 425427 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 51050040 is about 7144.9310703463. The cubic root of 51050040 is about 370.9642247478.

Adding to 51050040 its reverse (4005015), we get a palindrome (55055055).

The spelling of 51050040 in words is "fifty-one million, fifty thousand, forty".