1531220054 has 32 divisors (see below), whose sum is σ = 2829066240. Its totient is φ = 605286432.

The previous prime is 1531220029. The next prime is 1531220063. The reversal of 1531220054 is 4500221351.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 317747 + ... + 322529.

It is an arithmetic number, because the mean of its divisors is an integer number (88408320).

Almost surely, 2^1531220054 is an apocalyptic number.

1531220054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1531220054 is a deficient number, since it is larger than the sum of its proper divisors (1297846186).

1531220054 is a wasteful number, since it uses less digits than its factorization.

1531220054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1531220054 is about 39130.8069684232. The cubic root of 1531220054 is about 1152.6015592717.

The spelling of 1531220054 in words is "one billion, five hundred thirty-one million, two hundred twenty thousand, fifty-four".