145245061 has 4 divisors (see below), whose sum is σ = 156417772. Its totient is φ = 134072352.

The previous prime is 145245053. The next prime is 145245109. The reversal of 145245061 is 160542541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34869025 + 110376036 = 5905^2 + 10506^2 .

It is a cyclic number.

It is not a de Polignac number, because 145245061 - 2³ = 145245053 is a prime.

It is a super-2 number, since 2×145245061² = 42192255489787442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145245011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5586336 + ... + 5586361.

It is an arithmetic number, because the mean of its divisors is an integer number (39104443).

Almost surely, 2^145245061 is an apocalyptic number.

It is an amenable number.

145245061 is a deficient number, since it is larger than the sum of its proper divisors (11172711).

145245061 is a wasteful number, since it uses less digits than its factorization.

145245061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172710.

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

The square root of 145245061 is about 12051.7658872051. The cubic root of 145245061 is about 525.6545860728.

The spelling of 145245061 in words is "one hundred forty-five million, two hundred forty-five thousand, sixty-one".