1550540953 has 8 divisors (see below), whose sum is σ = 1670624648. Its totient is φ = 1430573184.

The previous prime is 1550540921. The next prime is 1550540977. The reversal of 1550540953 is 3590450551.

It can be written as a sum of positive squares in 4 ways, for example, as 1567504 + 1548973449 = 1252^2 + 39357^2 .

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 1550540953 - 2⁵ = 1550540921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550540903) 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, 126 + ... + 55687.

It is an arithmetic number, because the mean of its divisors is an integer number (208828081).

Almost surely, 2^1550540953 is an apocalyptic number.

1550540953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1550540953 is a deficient number, since it is larger than the sum of its proper divisors (120083695).

1550540953 is a wasteful number, since it uses less digits than its factorization.

1550540953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57963.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 1550540953 is about 39376.9088807133. The cubic root of 1550540953 is about 1157.4291442803.

The spelling of 1550540953 in words is "one billion, five hundred fifty million, five hundred forty thousand, nine hundred fifty-three".