51853040 has 40 divisors (see below), whose sum is σ = 125804448. Its totient is φ = 19838720.

The previous prime is 51853031. The next prime is 51853099. The reversal of 51853040 is 4035815.

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

It is a congruent number.

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, 12251 + ... + 15930.

Almost surely, 2^51853040 is an apocalyptic number.

It is an amenable number.

51853040 is an abundant number, since it is smaller than the sum of its proper divisors (73951408).

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

51853040 is a wasteful number, since it uses less digits than its factorization.

51853040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28217 (or 28211 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51853040 is about 7200.9054986161. The cubic root of 51853040 is about 372.8991622229.

Adding to 51853040 its reverse (4035815), we get a palindrome (55888855).

Subtracting from 51853040 its reverse (4035815), we obtain a square (47817225 = 6915²).

The spelling of 51853040 in words is "fifty-one million, eight hundred fifty-three thousand, forty".