54919487 has 4 divisors (see below), whose sum is σ = 62765136. Its totient is φ = 47073840.

The previous prime is 54919451. The next prime is 54919489. The reversal of 54919487 is 78491945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54919487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54919489) 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, 3922814 + ... + 3922827.

It is an arithmetic number, because the mean of its divisors is an integer number (15691284).

Almost surely, 2^54919487 is an apocalyptic number.

54919487 is a deficient number, since it is larger than the sum of its proper divisors (7845649).

54919487 is an equidigital number, since it uses as much as digits as its factorization.

54919487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845648.

The product of its digits is 362880, while the sum is 47.

The square root of 54919487 is about 7410.7683137445. The cubic root of 54919487 is about 380.1095875068.

The spelling of 54919487 in words is "fifty-four million, nine hundred nineteen thousand, four hundred eighty-seven".