146878551 has 6 divisors (see below), whose sum is σ = 212157920. Its totient is φ = 97919028.

The previous prime is 146878547. The next prime is 146878559. The reversal of 146878551 is 155878641.

146878551 is a `hidden beast` number, since 14 + 6 + 87 + 8 + 551 = 666.

It is not a de Polignac number, because 146878551 - 2² = 146878547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146878497 and 146878506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146878559) 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 5 ways as a sum of consecutive naturals, for example, 8159911 + ... + 8159928.

Almost surely, 2^146878551 is an apocalyptic number.

146878551 is a deficient number, since it is larger than the sum of its proper divisors (65279369).

146878551 is a wasteful number, since it uses less digits than its factorization.

146878551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16319845 (or 16319842 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 146878551 is about 12119.3461457291. The cubic root of 146878551 is about 527.6178256298.

The spelling of 146878551 in words is "one hundred forty-six million, eight hundred seventy-eight thousand, five hundred fifty-one".