52145455140 has 72 divisors (see below), whose sum is σ = 159222143808. Its totient is φ = 13813358400.

The previous prime is 52145455127. The next prime is 52145455171. The reversal of 52145455140 is 4155454125.

52145455140 is a `hidden beast` number, since 5 + 2 + 14 + 54 + 551 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52145455095 and 52145455104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 932082 + ... + 986441.

It is an arithmetic number, because the mean of its divisors is an integer number (2211418664).

Almost surely, 2^52145455140 is an apocalyptic number.

It is an amenable number.

52145455140 is an abundant number, since it is smaller than the sum of its proper divisors (107076688668).

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

52145455140 is a wasteful number, since it uses less digits than its factorization.

52145455140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918689 (or 1918684 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 52145455140 in words is "fifty-two billion, one hundred forty-five million, four hundred fifty-five thousand, one hundred forty".