49145551 has 8 divisors (see below), whose sum is σ = 60486944. Its totient is φ = 38884320.

The previous prime is 49145531. The next prime is 49145563. The reversal of 49145551 is 15554194.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49145551 - 2⁵ = 49145519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49145501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269940 + ... + 270121.

It is an arithmetic number, because the mean of its divisors is an integer number (7560868).

Almost surely, 2^49145551 is an apocalyptic number.

49145551 is a deficient number, since it is larger than the sum of its proper divisors (11341393).

49145551 is a wasteful number, since it uses less digits than its factorization.

49145551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540081.

The product of its digits is 18000, while the sum is 34.

The square root of 49145551 is about 7010.3887909302. The cubic root of 49145551 is about 366.2925363822.

The spelling of 49145551 in words is "forty-nine million, one hundred forty-five thousand, five hundred fifty-one".