1552401144 has 72 divisors (see below), whose sum is σ = 4890866760. Its totient is φ = 443542176.

The previous prime is 1552401133. The next prime is 1552401157. The reversal of 1552401144 is 4411042551.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 216484 + ... + 223539.

It is an arithmetic number, because the mean of its divisors is an integer number (67928705).

Almost surely, 2^1552401144 is an apocalyptic number.

1552401144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1552401144 is an abundant number, since it is smaller than the sum of its proper divisors (3338465616).

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

1552401144 is a wasteful number, since it uses less digits than its factorization.

1552401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440049 (or 440035 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1552401144 is about 39400.5221285201. The cubic root of 1552401144 is about 1157.8918169673.

Adding to 1552401144 its reverse (4411042551), we get a palindrome (5963443695).

The spelling of 1552401144 in words is "one billion, five hundred fifty-two million, four hundred one thousand, one hundred forty-four".