55401520001 has 4 divisors (see below), whose sum is σ = 55950050004. Its totient is φ = 54852990000.

The previous prime is 55401519983. The next prime is 55401520073. The reversal of 55401520001 is 10002510455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46418271601 + 8983248400 = 215449^2 + 94780^2 .

It is a cyclic number.

It is not a de Polignac number, because 55401520001 - 2³⁰ = 54327778177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55401520081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274264850 + ... + 274265051.

It is an arithmetic number, because the mean of its divisors is an integer number (13987512501).

Almost surely, 2^55401520001 is an apocalyptic number.

It is an amenable number.

55401520001 is a deficient number, since it is larger than the sum of its proper divisors (548530003).

55401520001 is a wasteful number, since it uses less digits than its factorization.

55401520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548530002.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 55401520001 in words is "fifty-five billion, four hundred one million, five hundred twenty thousand, one".