1545452240 has 40 divisors (see below), whose sum is σ = 3604093728. Its totient is φ = 616302720.

The previous prime is 1545452239. The next prime is 1545452257. The reversal of 1545452240 is 422545451.

1545452240 = T₁₁₅ + T₁₁₆ + ... + T₂₁₀₀.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1545452240² = 4776845252242035200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1545452197 and 1545452206.

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, 2702 + ... + 55661.

Almost surely, 2^1545452240 is an apocalyptic number.

1545452240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545452240 is an abundant number, since it is smaller than the sum of its proper divisors (2058641488).

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

1545452240 is a wasteful number, since it uses less digits than its factorization.

1545452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58707 (or 58701 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1545452240 is about 39312.2403330057. The cubic root of 1545452240 is about 1156.1615695116.

Adding to 1545452240 its reverse (422545451), we get a palindrome (1967997691).

The spelling of 1545452240 in words is "one billion, five hundred forty-five million, four hundred fifty-two thousand, two hundred forty".