54187157 has 2 divisors, whose sum is σ = 54187158. Its totient is φ = 54187156.

The previous prime is 54187151. The next prime is 54187169. The reversal of 54187157 is 75178145.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47458321 + 6728836 = 6889^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 54187157 - 2¹² = 54183061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54187157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54187151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27093578 + 27093579.

It is an arithmetic number, because the mean of its divisors is an integer number (27093579).

Almost surely, 2^54187157 is an apocalyptic number.

It is an amenable number.

54187157 is a deficient number, since it is larger than the sum of its proper divisors (1).

54187157 is an equidigital number, since it uses as much as digits as its factorization.

54187157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 38.

The square root of 54187157 is about 7361.1926343494. The cubic root of 54187157 is about 378.4124837580.

The spelling of 54187157 in words is "fifty-four million, one hundred eighty-seven thousand, one hundred fifty-seven".