1534155540 has 48 divisors (see below), whose sum is σ = 4304328000. Its totient is φ = 408280320.

The previous prime is 1534155527. The next prime is 1534155563. The reversal of 1534155540 is 455514351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4320 + ... + 55560.

It is an arithmetic number, because the mean of its divisors is an integer number (89673500).

Almost surely, 2^1534155540 is an apocalyptic number.

1534155540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1534155540 is an abundant number, since it is smaller than the sum of its proper divisors (2770172460).

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

1534155540 is a wasteful number, since it uses less digits than its factorization.

1534155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51752 (or 51750 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 1534155540 is about 39168.2976398005. The cubic root of 1534155540 is about 1153.3376359075.

Adding to 1534155540 its reverse (455514351), we get a palindrome (1989669891).

The spelling of 1534155540 in words is "one billion, five hundred thirty-four million, one hundred fifty-five thousand, five hundred forty".