130440554 has 4 divisors (see below), whose sum is σ = 195660834. Its totient is φ = 65220276.

The previous prime is 130440551. The next prime is 130440581. The reversal of 130440554 is 455044031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 90687529 + 39753025 = 9523^2 + 6305^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130440551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32610137 + ... + 32610140.

Almost surely, 2^130440554 is an apocalyptic number.

130440554 is a deficient number, since it is larger than the sum of its proper divisors (65220280).

130440554 is an equidigital number, since it uses as much as digits as its factorization.

130440554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65220279.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 130440554 is about 11421.0574816871. The cubic root of 130440554 is about 507.1513021218.

Adding to 130440554 its reverse (455044031), we get a palindrome (585484585).

The spelling of 130440554 in words is "one hundred thirty million, four hundred forty thousand, five hundred fifty-four".