52400145 has 32 divisors (see below), whose sum is σ = 96141312. Its totient is φ = 23873472.

The previous prime is 52400087. The next prime is 52400149. The reversal of 52400145 is 54100425.

It is not a de Polignac number, because 52400145 - 2⁷ = 52400017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (52400149) 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 31 ways as a sum of consecutive naturals, for example, 39564 + ... + 40866.

It is an arithmetic number, because the mean of its divisors is an integer number (3004416).

Almost surely, 2^52400145 is an apocalyptic number.

It is an amenable number.

52400145 is a deficient number, since it is larger than the sum of its proper divisors (43741167).

52400145 is a wasteful number, since it uses less digits than its factorization.

52400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701.

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

The square root of 52400145 is about 7238.7944438283. The cubic root of 52400145 is about 374.2060714372.

The spelling of 52400145 in words is "fifty-two million, four hundred thousand, one hundred forty-five".