261634054 has 32 divisors (see below), whose sum is σ = 439022592. Its totient is φ = 115920000.

The previous prime is 261634033. The next prime is 261634073. The reversal of 261634054 is 450436162.

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, 414319 + ... + 414949.

It is an arithmetic number, because the mean of its divisors is an integer number (13719456).

Almost surely, 2^261634054 is an apocalyptic number.

261634054 is a deficient number, since it is larger than the sum of its proper divisors (177388538).

261634054 is a wasteful number, since it uses less digits than its factorization.

261634054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 261634054 is about 16175.1059965615. The cubic root of 261634054 is about 639.5847354964.

The spelling of 261634054 in words is "two hundred sixty-one million, six hundred thirty-four thousand, fifty-four".