261354045 has 16 divisors (see below), whose sum is σ = 420481152. Its totient is φ = 138617280.

The previous prime is 261354031. The next prime is 261354091. The reversal of 261354045 is 540453162.

It is not a de Polignac number, because 261354045 - 2⁴ = 261354029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45417 + ... + 50846.

It is an arithmetic number, because the mean of its divisors is an integer number (26280072).

Almost surely, 2^261354045 is an apocalyptic number.

It is an amenable number.

261354045 is a deficient number, since it is larger than the sum of its proper divisors (159127107).

261354045 is a wasteful number, since it uses less digits than its factorization.

261354045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96452.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 261354045 is about 16166.4481256706. The cubic root of 261354045 is about 639.3564861451.

The spelling of 261354045 in words is "two hundred sixty-one million, three hundred fifty-four thousand, forty-five".