51941040 has 40 divisors (see below), whose sum is σ = 161017968. Its totient is φ = 13850880.

The previous prime is 51941039. The next prime is 51941047. The reversal of 51941040 is 4014915.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51941040.

It is not an unprimeable number, because it can be changed into a prime (51941047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107971 + ... + 108450.

Almost surely, 2^51941040 is an apocalyptic number.

It is an amenable number.

51941040 is an abundant number, since it is smaller than the sum of its proper divisors (109076928).

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

51941040 is a wasteful number, since it uses less digits than its factorization.

51941040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216437 (or 216431 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 51941040 is about 7207.0132509938. The cubic root of 51941040 is about 373.1099925503.

Adding to 51941040 its reverse (4014915), we get a palindrome (55955955).

The spelling of 51941040 in words is "fifty-one million, nine hundred forty-one thousand, forty".