61354957 has 2 divisors, whose sum is σ = 61354958. Its totient is φ = 61354956.

The previous prime is 61354949. The next prime is 61354963. The reversal of 61354957 is 75945316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31967716 + 29387241 = 5654^2 + 5421^2 .

It is a cyclic number.

It is not a de Polignac number, because 61354957 - 2³ = 61354949 is a prime.

It is a super-3 number, since 3×61354957³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61354057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30677478 + 30677479.

It is an arithmetic number, because the mean of its divisors is an integer number (30677479).

Almost surely, 2^61354957 is an apocalyptic number.

It is an amenable number.

61354957 is a deficient number, since it is larger than the sum of its proper divisors (1).

61354957 is an equidigital number, since it uses as much as digits as its factorization.

61354957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 61354957 is about 7832.9405078808. The cubic root of 61354957 is about 394.4117869999.

The spelling of 61354957 in words is "sixty-one million, three hundred fifty-four thousand, nine hundred fifty-seven".