49513531 has 2 divisors, whose sum is σ = 49513532. Its totient is φ = 49513530.

The previous prime is 49513507. The next prime is 49513559. The reversal of 49513531 is 13531594.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49513531 - 2⁹ = 49513019 is a prime.

It is a super-2 number, since 2×49513531² = 4903179504175922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49513493 and 49513502.

It is not a weakly prime, because it can be changed into another prime (49513591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24756765 + 24756766.

It is an arithmetic number, because the mean of its divisors is an integer number (24756766).

Almost surely, 2^49513531 is an apocalyptic number.

49513531 is a deficient number, since it is larger than the sum of its proper divisors (1).

49513531 is an equidigital number, since it uses as much as digits as its factorization.

49513531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 49513531 is about 7036.5851803272. The cubic root of 49513531 is about 367.2044758870.

The spelling of 49513531 in words is "forty-nine million, five hundred thirteen thousand, five hundred thirty-one".