145572649 has 8 divisors (see below), whose sum is σ = 156307968. Its totient is φ = 135078720.

The previous prime is 145572643. The next prime is 145572659. The reversal of 145572649 is 946275541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145572649 - 2⁵ = 145572617 is a prime.

It is a super-2 number, since 2×145572649² = 42382792273754402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145572643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59097 + ... + 61510.

It is an arithmetic number, because the mean of its divisors is an integer number (19538496).

Almost surely, 2^145572649 is an apocalyptic number.

It is an amenable number.

145572649 is a deficient number, since it is larger than the sum of its proper divisors (10735319).

145572649 is a wasteful number, since it uses less digits than its factorization.

145572649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120695.

The product of its digits is 302400, while the sum is 43.

The square root of 145572649 is about 12065.3491039422. The cubic root of 145572649 is about 526.0494792183.

The spelling of 145572649 in words is "one hundred forty-five million, five hundred seventy-two thousand, six hundred forty-nine".