1545150421 has 8 divisors (see below), whose sum is σ = 1600012800. Its totient is φ = 1490393520.

The previous prime is 1545150407. The next prime is 1545150461. The reversal of 1545150421 is 1240515451.

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

It is not a de Polignac number, because 1545150421 - 2⁵ = 1545150389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545150421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545150461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4060 + ... + 55738.

It is an arithmetic number, because the mean of its divisors is an integer number (200001600).

Almost surely, 2^1545150421 is an apocalyptic number.

It is an amenable number.

1545150421 is a deficient number, since it is larger than the sum of its proper divisors (54862379).

1545150421 is a wasteful number, since it uses less digits than its factorization.

1545150421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52739.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1545150421 is about 39308.4014047888. The cubic root of 1545150421 is about 1156.0863004440.

Adding to 1545150421 its reverse (1240515451), we get a palindrome (2785665872).

The spelling of 1545150421 in words is "one billion, five hundred forty-five million, one hundred fifty thousand, four hundred twenty-one".