30144555 has 100 divisors (see below), whose sum is σ = 65072832. Its totient is φ = 13335840.

The previous prime is 30144551. The next prime is 30144557. The reversal of 30144555 is 55544103.

It is not a de Polignac number, because 30144555 - 2² = 30144551 is a prime.

It is a super-2 number, since 2×30144555² = 1817388392296050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30144551) by changing a digit.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 972390 + ... + 972420.

Almost surely, 2^30144555 is an apocalyptic number.

30144555 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30144555 is an abundant number, since it is smaller than the sum of its proper divisors (34928277).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30144555 is an frugal number, since it uses more digits than its factorization.

30144555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 30144555 is about 5490.4057227130. The cubic root of 30144555 is about 311.2215244671.

Adding to 30144555 its reverse (55544103), we get a palindrome (85688658).

It can be divided in two parts, 3014 and 4555, that added together give a square (7569 = 87²).

The spelling of 30144555 in words is "thirty million, one hundred forty-four thousand, five hundred fifty-five".