61954 has 4 divisors (see below), whose sum is σ = 92934. Its totient is φ = 30976.

The previous prime is 61949. The next prime is 61961. The reversal of 61954 is 45916.

61954 = T₁₇₄ + T₁₇₅ + ... + T₁₇₇.

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

It can be written as a sum of positive squares in only one way, i.e., 31329 + 30625 = 177^2 + 175^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

61954 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15487 + ... + 15490.

2⁶¹⁹⁵⁴ is an apocalyptic number.

61954 is a deficient number, since it is larger than the sum of its proper divisors (30980).

61954 is a wasteful number, since it uses less digits than its factorization.

61954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30979.

The product of its digits is 1080, while the sum is 25.

The square root of 61954 is about 248.9056045974. The cubic root of 61954 is about 39.5691253409.

The spelling of 61954 in words is "sixty-one thousand, nine hundred fifty-four".