5535400121 has 4 divisors (see below), whose sum is σ = 5537008500. Its totient is φ = 5533791744.

The previous prime is 5535400109. The next prime is 5535400151. The reversal of 5535400121 is 1210045355.

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 1091311225 + 4444088896 = 33035^2 + 66664^2 .

It is a cyclic number.

It is not a de Polignac number, because 5535400121 - 2²² = 5531205817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5535400151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799016 + ... + 805913.

It is an arithmetic number, because the mean of its divisors is an integer number (1384252125).

Almost surely, 2^5535400121 is an apocalyptic number.

It is an amenable number.

5535400121 is a deficient number, since it is larger than the sum of its proper divisors (1608379).

5535400121 is a wasteful number, since it uses less digits than its factorization.

5535400121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608378.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 5535400121 is about 74400.2696298878. The cubic root of 5535400121 is about 1768.9531853701.

Adding to 5535400121 its reverse (1210045355), we get a palindrome (6745445476).

The spelling of 5535400121 in words is "five billion, five hundred thirty-five million, four hundred thousand, one hundred twenty-one".