49128553 has 4 divisors (see below), whose sum is σ = 49515520. Its totient is φ = 48741588.

The previous prime is 49128493. The next prime is 49128571. The reversal of 49128553 is 35582194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49128553 - 2⁹ = 49128041 is a prime.

It is a super-2 number, since 2×49128553² = 4827229439747618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49128853) 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, 193293 + ... + 193546.

It is an arithmetic number, because the mean of its divisors is an integer number (12378880).

Almost surely, 2^49128553 is an apocalyptic number.

It is an amenable number.

49128553 is a deficient number, since it is larger than the sum of its proper divisors (386967).

49128553 is a wasteful number, since it uses less digits than its factorization.

49128553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386966.

The product of its digits is 43200, while the sum is 37.

The square root of 49128553 is about 7009.1763424813. The cubic root of 49128553 is about 366.2503015758.

The spelling of 49128553 in words is "forty-nine million, one hundred twenty-eight thousand, five hundred fifty-three".