1540000051 has 8 divisors (see below), whose sum is σ = 1632642944. Its totient is φ = 1450042560.

The previous prime is 1540000037. The next prime is 1540000061. The reversal of 1540000051 is 1500000451.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1540000051 - 2¹¹ = 1539998003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670170 + ... + 672463.

It is an arithmetic number, because the mean of its divisors is an integer number (204080368).

Almost surely, 2^1540000051 is an apocalyptic number.

1540000051 is a deficient number, since it is larger than the sum of its proper divisors (92642893).

1540000051 is a wasteful number, since it uses less digits than its factorization.

1540000051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342701.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1540000051 is about 39242.8343904973. The cubic root of 1540000051 is about 1154.8003630393.

The spelling of 1540000051 in words is "one billion, five hundred forty million, fifty-one", and thus it is an aban number.