145503856 has 10 divisors (see below), whose sum is σ = 281913752. Its totient is φ = 72751920.

The previous prime is 145503847. The next prime is 145503913. The reversal of 145503856 is 658305541.

It is a super-2 number, since 2×145503856² = 42342744221737472, 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 as a sum of consecutive naturals, namely, 4546980 + ... + 4547011.

Almost surely, 2^145503856 is an apocalyptic number.

145503856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145503856 is a deficient number, since it is larger than the sum of its proper divisors (136409896).

145503856 is an equidigital number, since it uses as much as digits as its factorization.

145503856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093999 (or 9093993 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 145503856 is about 12062.4979170983. The cubic root of 145503856 is about 525.9666014157.

The spelling of 145503856 in words is "one hundred forty-five million, five hundred three thousand, eight hundred fifty-six".