1540252554 has 8 divisors (see below), whose sum is σ = 3080505120. Its totient is φ = 513417516.

The previous prime is 1540252541. The next prime is 1540252573. The reversal of 1540252554 is 4552520451.

It is a sphenic number, since it is the product of 3 distinct primes.

1540252554 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128354374 + ... + 128354385.

It is an arithmetic number, because the mean of its divisors is an integer number (385063140).

Almost surely, 2^1540252554 is an apocalyptic number.

1540252554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540252554 is a wasteful number, since it uses less digits than its factorization.

1540252554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256708764.

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 1540252554 is about 39246.0514446995. The cubic root of 1540252554 is about 1154.8634744270.

The spelling of 1540252554 in words is "one billion, five hundred forty million, two hundred fifty-two thousand, five hundred fifty-four".