49920551 has 4 divisors (see below), whose sum is σ = 52857072. Its totient is φ = 46984032.

The previous prime is 49920523. The next prime is 49920553. The reversal of 49920551 is 15502994.

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 49920551 - 2⁶ = 49920487 is a prime.

It is a super-2 number, since 2×49920551² = 4984122824287202, 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 (49920553) 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, 1468235 + ... + 1468268.

It is an arithmetic number, because the mean of its divisors is an integer number (13214268).

Almost surely, 2^49920551 is an apocalyptic number.

49920551 is a deficient number, since it is larger than the sum of its proper divisors (2936521).

49920551 is a wasteful number, since it uses less digits than its factorization.

49920551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936520.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 49920551 is about 7065.4476857450. The cubic root of 49920551 is about 368.2079180086.

The spelling of 49920551 in words is "forty-nine million, nine hundred twenty thousand, five hundred fifty-one".