47251551 has 16 divisors (see below), whose sum is σ = 67039488. Its totient is φ = 29500800.

The previous prime is 47251541. The next prime is 47251571. The reversal of 47251551 is 15515274.

It is not a de Polignac number, because 47251551 - 2²¹ = 45154399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47251511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8566 + ... + 12956.

It is an arithmetic number, because the mean of its divisors is an integer number (4189968).

Almost surely, 2^47251551 is an apocalyptic number.

47251551 is a deficient number, since it is larger than the sum of its proper divisors (19787937).

47251551 is a wasteful number, since it uses less digits than its factorization.

47251551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622.

The product of its digits is 7000, while the sum is 30.

The square root of 47251551 is about 6873.9763601572. The cubic root of 47251551 is about 361.5252952768.

The spelling of 47251551 in words is "forty-seven million, two hundred fifty-one thousand, five hundred fifty-one".