51452020 has 24 divisors (see below), whose sum is σ = 109063584. Its totient is φ = 20387616.

The previous prime is 51452017. The next prime is 51452059. The reversal of 51452020 is 2025415.

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, 9882 + ... + 14161.

It is an arithmetic number, because the mean of its divisors is an integer number (4544316).

Almost surely, 2^51452020 is an apocalyptic number.

It is an amenable number.

51452020 is an abundant number, since it is smaller than the sum of its proper divisors (57611564).

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

51452020 is a wasteful number, since it uses less digits than its factorization.

51452020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24159 (or 24157 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51452020 is about 7173.0063432288. The cubic root of 51452020 is about 371.9353666566.

Adding to 51452020 its reverse (2025415), we get a palindrome (53477435).

It can be divided in two parts, 5 and 1452020, that added together give a square (1452025 = 1205²).

The spelling of 51452020 in words is "fifty-one million, four hundred fifty-two thousand, twenty".