75772131 has 16 divisors (see below), whose sum is σ = 103638528. Its totient is φ = 49220000.

The previous prime is 75772127. The next prime is 75772159. The reversal of 75772131 is 13127757.

It is a cyclic number.

It is not a de Polignac number, because 75772131 - 2² = 75772127 is a prime.

It is a super-2 number, since 2×75772131² = 11482831672562322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75772092 and 75772101.

It is not an unprimeable number, because it can be changed into a prime (75772121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34321 + ... + 36461.

It is an arithmetic number, because the mean of its divisors is an integer number (6477408).

Almost surely, 2^75772131 is an apocalyptic number.

75772131 is a deficient number, since it is larger than the sum of its proper divisors (27866397).

75772131 is a wasteful number, since it uses less digits than its factorization.

75772131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

The product of its digits is 10290, while the sum is 33.

The square root of 75772131 is about 8704.7188926467. The cubic root of 75772131 is about 423.1585956392.

Adding to 75772131 its reverse (13127757), we get a palindrome (88899888).

The spelling of 75772131 in words is "seventy-five million, seven hundred seventy-two thousand, one hundred thirty-one".