1554423540 has 24 divisors (see below), whose sum is σ = 4352386080. Its totient is φ = 414512928.

The previous prime is 1554423491. The next prime is 1554423551. The reversal of 1554423540 is 453244551.

It is a super-2 number, since 2×1554423540² = 4832465083412263200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12953470 + ... + 12953589.

It is an arithmetic number, because the mean of its divisors is an integer number (181349420).

Almost surely, 2^1554423540 is an apocalyptic number.

1554423540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1554423540 is an abundant number, since it is smaller than the sum of its proper divisors (2797962540).

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

1554423540 is a wasteful number, since it uses less digits than its factorization.

1554423540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25907071 (or 25907069 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 1554423540 is about 39426.1783590548. The cubic root of 1554423540 is about 1158.3944146433.

The spelling of 1554423540 in words is "one billion, five hundred fifty-four million, four hundred twenty-three thousand, five hundred forty".