1554252140 has 48 divisors (see below), whose sum is σ = 3892396032. Its totient is φ = 509716416.

The previous prime is 1554252137. The next prime is 1554252169. The reversal of 1554252140 is 412524551.

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, 238124 + ... + 244563.

It is an arithmetic number, because the mean of its divisors is an integer number (81091584).

Almost surely, 2^1554252140 is an apocalyptic number.

1554252140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1554252140 is an abundant number, since it is smaller than the sum of its proper divisors (2338143892).

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

1554252140 is a wasteful number, since it uses less digits than its factorization.

1554252140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482726 (or 482724 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1554252140 is about 39424.0046164770. The cubic root of 1554252140 is about 1158.3518359218.

Adding to 1554252140 its reverse (412524551), we get a palindrome (1966776691).

The spelling of 1554252140 in words is "one billion, five hundred fifty-four million, two hundred fifty-two thousand, one hundred forty".