55400165601 has 64 divisors (see below), whose sum is σ = 84028907520. Its totient is φ = 32169795840.

The previous prime is 55400165551. The next prime is 55400165617. The reversal of 55400165601 is 10656100455.

55400165601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55400165601 - 2¹³ = 55400157409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55400165621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71668651 + ... + 71669423.

It is an arithmetic number, because the mean of its divisors is an integer number (1312951680).

Almost surely, 2^55400165601 is an apocalyptic number.

It is an amenable number.

55400165601 is a deficient number, since it is larger than the sum of its proper divisors (28628741919).

55400165601 is a wasteful number, since it uses less digits than its factorization.

55400165601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 55400165601 in words is "fifty-five billion, four hundred million, one hundred sixty-five thousand, six hundred one".