261061514 has 48 divisors (see below), whose sum is σ = 477804096. Its totient is φ = 106545600.

The previous prime is 261061499. The next prime is 261061531. The reversal of 261061514 is 415160162.

It is a super-2 number, since 2×261061514² = 136306228183944392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172019 + ... + 173529.

It is an arithmetic number, because the mean of its divisors is an integer number (9954252).

Almost surely, 2^261061514 is an apocalyptic number.

261061514 is a deficient number, since it is larger than the sum of its proper divisors (216742582).

261061514 is a wasteful number, since it uses less digits than its factorization.

261061514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 261061514 is about 16157.3981197469. The cubic root of 261061514 is about 639.1178552915.

The spelling of 261061514 in words is "two hundred sixty-one million, sixty-one thousand, five hundred fourteen".