550121351 has 4 divisors (see below), whose sum is σ = 592438392. Its totient is φ = 507804312.

The previous prime is 550121339. The next prime is 550121401. The reversal of 550121351 is 153121055.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 550121351 - 2²² = 545927047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550121311) 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, 21158501 + ... + 21158526.

It is an arithmetic number, because the mean of its divisors is an integer number (148109598).

Almost surely, 2^550121351 is an apocalyptic number.

550121351 is a deficient number, since it is larger than the sum of its proper divisors (42317041).

550121351 is a wasteful number, since it uses less digits than its factorization.

550121351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42317040.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 550121351 is about 23454.6658684365. The cubic root of 550121351 is about 819.3815240213.

The spelling of 550121351 in words is "five hundred fifty million, one hundred twenty-one thousand, three hundred fifty-one".