50551005491 has 8 divisors (see below), whose sum is σ = 57774005760. Its totient is φ = 43328362248.

The previous prime is 50551005481. The next prime is 50551005511. The reversal of 50551005491 is 19450015505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50551005491 is a prime.

It is a super-2 number, since 2×50551005491² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50551005481) 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, 375500 + ... + 492038.

It is an arithmetic number, because the mean of its divisors is an integer number (7221750720).

Almost surely, 2^50551005491 is an apocalyptic number.

50551005491 is a deficient number, since it is larger than the sum of its proper divisors (7223000269).

50551005491 is a wasteful number, since it uses less digits than its factorization.

50551005491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178513.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 50551005491 in words is "fifty billion, five hundred fifty-one million, five thousand, four hundred ninety-one".