55535401501 has 2 divisors, whose sum is σ = 55535401502. Its totient is φ = 55535401500.

The previous prime is 55535401499. The next prime is 55535401601. The reversal of 55535401501 is 10510453555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41057295876 + 14478105625 = 202626^2 + 120325^2 .

It is a cyclic number.

It is not a de Polignac number, because 55535401501 - 2¹ = 55535401499 is a prime.

Together with 55535401499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55535401601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27767700750 + 27767700751.

It is an arithmetic number, because the mean of its divisors is an integer number (27767700751).

Almost surely, 2^55535401501 is an apocalyptic number.

It is an amenable number.

55535401501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55535401501 is an equidigital number, since it uses as much as digits as its factorization.

55535401501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 55535401501 in words is "fifty-five billion, five hundred thirty-five million, four hundred one thousand, five hundred one".