145271616 has 56 divisors (see below), whose sum is σ = 439277760. Its totient is φ = 41505792.

The previous prime is 145271593. The next prime is 145271639. The reversal of 145271616 is 616172541.

It is an interprime number because it is at equal distance from previous prime (145271593) and next prime (145271639).

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×145271616² = 42207684830502912, 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, 52701 + ... + 55388.

Almost surely, 2^145271616 is an apocalyptic number.

145271616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145271616 is an abundant number, since it is smaller than the sum of its proper divisors (294006144).

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

145271616 is a wasteful number, since it uses less digits than its factorization.

145271616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108111 (or 108101 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 145271616 is about 12052.8675426224. The cubic root of 145271616 is about 525.6866190769.

The spelling of 145271616 in words is "one hundred forty-five million, two hundred seventy-one thousand, six hundred sixteen".