5405520121 has 8 divisors (see below), whose sum is σ = 5713833600. Its totient is φ = 5099587920.

The previous prime is 5405520091. The next prime is 5405520137. The reversal of 5405520121 is 1210255045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5405520121 - 2⁵ = 5405520089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5405520161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590650 + ... + 599731.

It is an arithmetic number, because the mean of its divisors is an integer number (714229200).

Almost surely, 2^5405520121 is an apocalyptic number.

It is an amenable number.

5405520121 is a deficient number, since it is larger than the sum of its proper divisors (308313479).

5405520121 is a wasteful number, since it uses less digits than its factorization.

5405520121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190639.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 5405520121 is about 73522.2423556300. The cubic root of 5405520121 is about 1755.0082516258.

Adding to 5405520121 its reverse (1210255045), we get a palindrome (6615775166).

The spelling of 5405520121 in words is "five billion, four hundred five million, five hundred twenty thousand, one hundred twenty-one".