7405755131 has 2 divisors, whose sum is σ = 7405755132. Its totient is φ = 7405755130.

The previous prime is 7405755121. The next prime is 7405755139. The reversal of 7405755131 is 1315575047.

7405755131 is nontrivially palindromic in base 5.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7405755131 is a prime.

It is a super-2 number, since 2×7405755131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7405755139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702877565 + 3702877566.

It is an arithmetic number, because the mean of its divisors is an integer number (3702877566).

Almost surely, 2^7405755131 is an apocalyptic number.

7405755131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7405755131 is an equidigital number, since it uses as much as digits as its factorization.

7405755131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 7405755131 is about 86056.6971885396. The cubic root of 7405755131 is about 1949.2002094650.

The spelling of 7405755131 in words is "seven billion, four hundred five million, seven hundred fifty-five thousand, one hundred thirty-one".