145571701 has 8 divisors (see below), whose sum is σ = 159859008. Its totient is φ = 131460000.

The previous prime is 145571687. The next prime is 145571707. The reversal of 145571701 is 107175541.

It is a happy number.

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 145571701 - 2¹¹ = 145569653 is a prime.

It is a super-2 number, since 2×145571701² = 42382240264066802, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145571707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42160 + ... + 45481.

It is an arithmetic number, because the mean of its divisors is an integer number (19982376).

Almost surely, 2^145571701 is an apocalyptic number.

145571701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145571701 is a deficient number, since it is larger than the sum of its proper divisors (14287307).

145571701 is a wasteful number, since it uses less digits than its factorization.

145571701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87803.

The product of its (nonzero) digits is 4900, while the sum is 31.

The square root of 145571701 is about 12065.3098178207. The cubic root of 145571701 is about 526.0483373005.

The spelling of 145571701 in words is "one hundred forty-five million, five hundred seventy-one thousand, seven hundred one".