145261540 has 48 divisors (see below), whose sum is σ = 312076800. Its totient is φ = 56778752.

The previous prime is 145261513. The next prime is 145261591. The reversal of 145261540 is 45162541.

It is a super-2 number, since 2×145261540² = 42201830006343200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145261499 and 145261508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303021 + ... + 303499.

It is an arithmetic number, because the mean of its divisors is an integer number (6501600).

Almost surely, 2^145261540 is an apocalyptic number.

145261540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145261540 is an abundant number, since it is smaller than the sum of its proper divisors (166815260).

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

145261540 is a wasteful number, since it uses less digits than its factorization.

145261540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 145261540 is about 12052.4495435575. The cubic root of 145261540 is about 525.6744649687.

The spelling of 145261540 in words is "one hundred forty-five million, two hundred sixty-one thousand, five hundred forty".