5651121450 has 96 divisors (see below), whose sum is σ = 15202152000. Its totient is φ = 1380971520.

The previous prime is 5651121439. The next prime is 5651121451. The reversal of 5651121450 is 541211565.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (5651121451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260626 + ... + 281474.

It is an arithmetic number, because the mean of its divisors is an integer number (158355750).

Almost surely, 2^5651121450 is an apocalyptic number.

5651121450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5651121450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7601076000).

5651121450 is an abundant number, since it is smaller than the sum of its proper divisors (9551030550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5651121450 is a wasteful number, since it uses less digits than its factorization.

5651121450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21016 (or 21011 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 5651121450 is about 75173.9412961699. The cubic root of 5651121450 is about 1781.1953266075.

The spelling of 5651121450 in words is "five billion, six hundred fifty-one million, one hundred twenty-one thousand, four hundred fifty".