52451040 has 96 divisors (see below), whose sum is σ = 172440576. Its totient is φ = 13376000.

The previous prime is 52451029. The next prime is 52451041. The reversal of 52451040 is 4015425.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×52451040² = 5502223194163200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52450998 and 52451016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52451041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8665 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (1796256).

Almost surely, 2^52451040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52451040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86220288).

52451040 is an abundant number, since it is smaller than the sum of its proper divisors (119989536).

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

52451040 is a wasteful number, since it uses less digits than its factorization.

52451040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792 (or 4784 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52451040 is about 7242.3090240613. The cubic root of 52451040 is about 374.3271846852.

Adding to 52451040 its reverse (4015425), we get a palindrome (56466465).

The spelling of 52451040 in words is "fifty-two million, four hundred fifty-one thousand, forty".