49155511 has 4 divisors (see below), whose sum is σ = 49207312. Its totient is φ = 49103712.

The previous prime is 49155487. The next prime is 49155529. The reversal of 49155511 is 11555194.

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 49155511 - 2¹⁵ = 49122743 is a prime.

It is a super-2 number, since 2×49155511² = 4832528523342242, 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 (49155571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24450 + ... + 26383.

It is an arithmetic number, because the mean of its divisors is an integer number (12301828).

Almost surely, 2^49155511 is an apocalyptic number.

49155511 is a deficient number, since it is larger than the sum of its proper divisors (51801).

49155511 is an equidigital number, since it uses as much as digits as its factorization.

49155511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51800.

The product of its digits is 4500, while the sum is 31.

The square root of 49155511 is about 7011.0991292379. The cubic root of 49155511 is about 366.3172793966.

The spelling of 49155511 in words is "forty-nine million, one hundred fifty-five thousand, five hundred eleven".