49751531 has 2 divisors, whose sum is σ = 49751532. Its totient is φ = 49751530.

The previous prime is 49751509. The next prime is 49751543. The reversal of 49751531 is 13515794.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49751531 is a prime.

It is a super-2 number, since 2×49751531² = 4950429673687922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49751491 and 49751500.

It is not a weakly prime, because it can be changed into another prime (49751551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24875765 + 24875766.

It is an arithmetic number, because the mean of its divisors is an integer number (24875766).

Almost surely, 2^49751531 is an apocalyptic number.

49751531 is a deficient number, since it is larger than the sum of its proper divisors (1).

49751531 is an equidigital number, since it uses as much as digits as its factorization.

49751531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 49751531 is about 7053.4765187105. The cubic root of 49751531 is about 367.7918911359.

The spelling of 49751531 in words is "forty-nine million, seven hundred fifty-one thousand, five hundred thirty-one".