54142091 has 2 divisors, whose sum is σ = 54142092. Its totient is φ = 54142090.

The previous prime is 54142087. The next prime is 54142103. The reversal of 54142091 is 19024145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54142091 - 2² = 54142087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54142091.

It is not a weakly prime, because it can be changed into another prime (54142051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27071045 + 27071046.

It is an arithmetic number, because the mean of its divisors is an integer number (27071046).

Almost surely, 2^54142091 is an apocalyptic number.

54142091 is a deficient number, since it is larger than the sum of its proper divisors (1).

54142091 is an equidigital number, since it uses as much as digits as its factorization.

54142091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 54142091 is about 7358.1309447441. The cubic root of 54142091 is about 378.3075495031.

The spelling of 54142091 in words is "fifty-four million, one hundred forty-two thousand, ninety-one".