75551140 has 36 divisors (see below), whose sum is σ = 184563036. Its totient is φ = 25902912.

The previous prime is 75551117. The next prime is 75551141. The reversal of 75551140 is 4115557.

It can be written as a sum of positive squares in 2 ways, for example, as 21734244 + 53816896 = 4662^2 + 7336^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 75551099 and 75551108.

It is not an unprimeable number, because it can be changed into a prime (75551141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37567 + ... + 39526.

It is an arithmetic number, because the mean of its divisors is an integer number (5126751).

Almost surely, 2^75551140 is an apocalyptic number.

75551140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75551140 is an abundant number, since it is smaller than the sum of its proper divisors (109011896).

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

75551140 is a wasteful number, since it uses less digits than its factorization.

75551140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77116 (or 77107 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 75551140 is about 8692.0158766537. The cubic root of 75551140 is about 422.7468114311.

Adding to 75551140 its reverse (4115557), we get a palindrome (79666697).

The spelling of 75551140 in words is "seventy-five million, five hundred fifty-one thousand, one hundred forty".