49015519 has 4 divisors (see below), whose sum is σ = 56017744. Its totient is φ = 42013296.

The previous prime is 49015469. The next prime is 49015559. The reversal of 49015519 is 91551094.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49015519 - 2¹⁷ = 48884447 is a prime.

It is a super-2 number, since 2×49015519² = 4805042205678722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49015559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3501102 + ... + 3501115.

It is an arithmetic number, because the mean of its divisors is an integer number (14004436).

Almost surely, 2^49015519 is an apocalyptic number.

49015519 is a deficient number, since it is larger than the sum of its proper divisors (7002225).

49015519 is an equidigital number, since it uses as much as digits as its factorization.

49015519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002224.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 49015519 is about 7001.1084122444. The cubic root of 49015519 is about 365.9691987377.

The spelling of 49015519 in words is "forty-nine million, fifteen thousand, five hundred nineteen".