1550145541 has 4 divisors (see below), whose sum is σ = 1771594912. Its totient is φ = 1328696172.

The previous prime is 1550145529. The next prime is 1550145551. The reversal of 1550145541 is 1455410551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1550145541 - 2²⁹ = 1013274629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550145551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110724675 + ... + 110724688.

It is an arithmetic number, because the mean of its divisors is an integer number (442898728).

Almost surely, 2^1550145541 is an apocalyptic number.

It is an amenable number.

1550145541 is a deficient number, since it is larger than the sum of its proper divisors (221449371).

1550145541 is an equidigital number, since it uses as much as digits as its factorization.

1550145541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221449370.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 1550145541 is about 39371.8876992201. The cubic root of 1550145541 is about 1157.3307484525.

The spelling of 1550145541 in words is "one billion, five hundred fifty million, one hundred forty-five thousand, five hundred forty-one".